As President Trump withdraws certification of the nuclear agreement with Iran, commentators across the world struggled for words to adequately convey their outrage and contempt. A favourite term to describe Trump is as “a wrecking ball”, but the phrase suggests a sense of direction and capacity to strike a target which Trump does not possess.

The instant that Trump decertifies the deal struck by President Obama in 2015, the US becomes a lesser power and Iran a greater one, because he will confirm the belief that America is led by an egoist motivated by ignorant prejudice. Accusations of mental derangement have always been part of common currency of political abuse, but there is a growing belief among international leaders that in Trump’s case there might be something to it, though they have few ideas about what they should do about this.

Their bemusement is understandable given that the situation is so bizarre. In the past, highly neurotic individuals were most like to gain power as hereditary monarchs, Kaiser Wilhelm II of Germany being a prime example. Full blown psychoses are less common, though madness of Charles VI of France and Henry VI of England in the late Middle Ages precipitate both countries into civil wars. What is extraordinary about Trump’s all-consuming egomania, or what some call “malignant narcissism”, is that it did not prevent his rise to power.

World news in pictures Show all 50 1 /50 World news in pictures World news in pictures 14 September 2020 Japan's Prime Minister Shinzo Abe, Chief Cabinet Secretary Yoshihide Suga, former Defense Minister Shigeru Ishiba and former Foreign Minister Fumio Kishida celebrate after Suga was elected as new head of the ruling party at the Liberal Democratic Party's leadership election in Tokyo Reuters World news in pictures 13 September 2020 A man stands behind a burning barricade during the fifth straight day of protests against police brutality in Bogota AFP via Getty World news in pictures 12 September 2020 Police officers block and detain protesters during an opposition rally to protest the official presidential election results in Minsk, Belarus. Daily protests calling for the authoritarian president's resignation are now in their second month AP World news in pictures 11 September 2020 Members of 'Omnium Cultural' celebrate the 20th 'Festa per la llibertat' ('Fiesta for the freedom') to mark the Day of Catalonia in Barcelona. Omnion Cultural fights for the independence of Catalonia EPA World news in pictures 10 September 2020 The Moria refugee camp, two days after Greece's biggest migrant camp, was destroyed by fire. Thousands of asylum seekers on the island of Lesbos are now homeless AFP via Getty World news in pictures 9 September 2020 Pope Francis takes off his face mask as he arrives by car to hold a limited public audience at the San Damaso courtyard in The Vatican AFP via Getty World news in pictures 8 September 2020 A home is engulfed in flames during the "Creek Fire" in the Tollhouse area of California AFP via Getty World news in pictures 7 September 2020 A couple take photos along a sea wall of the waves brought by Typhoon Haishen in the eastern port city of Sokcho AFP via Getty World news in pictures 6 September 2020 Novak Djokovic and a tournament official tends to a linesperson who was struck with a ball by Djokovic during his match against Pablo Carreno Busta at the US Open USA Today Sports/Reuters World news in pictures 5 September 2020 Protesters confront police at the Shrine of Remembrance in Melbourne, Australia, during an anti-lockdown rally AFP via Getty World news in pictures 4 September 2020 A woman looks on from a rooftop as rescue workers dig through the rubble of a damaged building in Beirut. A search began for possible survivors after a scanner detected a pulse one month after the mega-blast at the adjacent port AFP via Getty World news in pictures 3 September 2020 A full moon next to the Virgen del Panecillo statue in Quito, Ecuador EPA World news in pictures 2 September 2020 A Palestinian woman reacts as Israeli forces demolish her animal shed near Hebron in the Israeli-occupied West Bank Reuters World news in pictures 1 September 2020 Students protest against presidential elections results in Minsk TUT.BY/AFP via Getty World news in pictures 31 August 2020 The pack rides during the 3rd stage of the Tour de France between Nice and Sisteron AFP via Getty World news in pictures 30 August 2020 Law enforcement officers block a street during a rally of opposition supporters protesting against presidential election results in Minsk, Belarus Reuters World news in pictures 29 August 2020 A woman holding a placard reading "Stop Censorship - Yes to the Freedom of Expression" shouts in a megaphone during a protest against the mandatory wearing of face masks in Paris. Masks, which were already compulsory on public transport, in enclosed public spaces, and outdoors in Paris in certain high-congestion areas around tourist sites, were made mandatory outdoors citywide on August 28 to fight the rising coronavirus infections AFP via Getty World news in pictures 28 August 2020 Japanese Prime Minister Shinzo Abe bows to the national flag at the start of a press conference at the prime minister official residence in Tokyo. Abe announced he will resign over health problems, in a bombshell development that kicks off a leadership contest in the world's third-largest economy AFP via Getty World news in pictures 27 August 2020 Residents take cover behind a tree trunk from rubber bullets fired by South African Police Service (SAPS) in Eldorado Park, near Johannesburg, during a protest by community members after a 16-year old boy was reported dead AFP via Getty World news in pictures 26 August 2020 People scatter rose petals on a statue of Mother Teresa marking her 110th birth anniversary in Ahmedabad AFP via Getty World news in pictures 25 August 2020 An aerial view shows beach-goers standing on salt formations in the Dead Sea near Ein Bokeq, Israel Reuters World news in pictures 24 August 2020 Health workers use a fingertip pulse oximeter and check the body temperature of a fisherwoman inside the Dharavi slum during a door-to-door Covid-19 coronavirus screening in Mumbai AFP via Getty World news in pictures 23 August 2020 People carry an idol of the Hindu god Ganesh, the deity of prosperity, to immerse it off the coast of the Arabian sea during the Ganesh Chaturthi festival in Mumbai, India Reuters World news in pictures 22 August 2020 Firefighters watch as flames from the LNU Lightning Complex fires approach a home in Napa County, California AP World news in pictures 21 August 2020 Members of the Israeli security forces arrest a Palestinian demonstrator during a rally to protest against Israel's plan to annex parts of the occupied West Bank AFP via Getty World news in pictures 20 August 2020 A man pushes his bicycle through a deserted road after prohibitory orders were imposed by district officials for a week to contain the spread of the Covid-19 in Kathmandu AFP via Getty World news in pictures 19 August 2020 A car burns while parked at a residence in Vacaville, California. Dozens of fires are burning out of control throughout Northern California as fire resources are spread thin AFP via Getty World news in pictures 18 August 2020 Students use their mobile phones as flashlights at an anti-government rally at Mahidol University in Nakhon Pathom. Thailand has seen near-daily protests in recent weeks by students demanding the resignation of Prime Minister Prayut Chan-O-Cha AFP via Getty World news in pictures 17 August 2020 Members of the Kayapo tribe block the BR163 highway during a protest outside Novo Progresso in Para state, Brazil. Indigenous protesters blocked a major transamazonian highway to protest against the lack of governmental support during the COVID-19 novel coronavirus pandemic and illegal deforestation in and around their territories AFP via Getty World news in pictures 16 August 2020 Lightning forks over the San Francisco-Oakland Bay Bridge as a storm passes over Oakland AP World news in pictures 15 August 2020 Belarus opposition supporters gather near the Pushkinskaya metro station where Alexander Taraikovsky, a 34-year-old protester died on August 10, during their protest rally in central Minsk AFP via Getty World news in pictures 14 August 2020 AlphaTauri's driver Daniil Kvyat takes part in the second practice session at the Circuit de Catalunya in Montmelo near Barcelona ahead of the Spanish F1 Grand Prix AFP via Getty World news in pictures 13 August 2020 Soldiers of the Brazilian Armed Forces during a disinfection of the Christ The Redeemer statue at the Corcovado mountain prior to the opening of the touristic attraction in Rio AFP via Getty World news in pictures 12 August 2020 Young elephant bulls tussle playfully on World Elephant Day at the Amboseli National Park in Kenya AFP via Getty World news in pictures 11 August 2020 French Prime Minister Jean Castex is helped by a member of staff to put a protective suit on prior to his visit at the CHU hospital in Montpellier AFP via Getty World news in pictures 10 August 2020 Locals harvest their potatoes as Mount Sinabung spews volcanic ash in Karo, North Sumatra province, Indonesia Antara Foto/Reuters World news in pictures 9 August 2020 Doves fly over the Peace Statue at Nagasaki Peace Park during the memorial ceremony held for the 75th anniversary of the atomic bombing EPA World news in pictures 8 August 2020 Anti-government protesters try to remove concrete wall that installed by security forces to prevent protesters reaching the Parliament square, during a protest against the political elites and the government after this week's deadly explosion in Beirut AP World news in pictures 7 August 2020 A protester throws a stone towards Israeli forces in the village of Turmus Aya, north of Ramallah in the occupied West Bank, following a march by Palestinians against the building of Israeli settlements AFP via Getty World news in pictures 6 August 2020 A woman yells as soldiers block a road for French President Emmanuel Macron's visit the Gemmayzeh neighborhood. The area in Beirut suffered extensive damage from the explosion at the seaport AP World news in pictures 5 August 2020 Damage at the site of Tuesday's blast in Beirut's port area, Lebanon Reuters World news in pictures 4 August 2020 A large explosion in the Lebanese capital Beirut. The blast, which rattled entire buildings and broke glass, was felt in several parts of the city AFP via Getty World news in pictures 3 August 2020 A general view shows the new road bridge in Genoa, Italy ahead of its official inauguration, after it was rebuilt following its collapse on August 14, 2018 which killed 43 people Reuters World news in pictures 2 August 2020 Empty stall spaces are seen hours before a citywide curfew is introduced in Melbourne, Australia EPA World news in pictures 1 August 2020 People take part in a demonstration by the initiative "Querdenken-711" with the slogan "the end of the pandemic - the day of freedom" to protest against the current measurements to curb the spread of COVID-19 in Berlin, Germany AFP via Getty World news in pictures 31 July 2020 Pilgrims circumambulating around the Kaaba, the holiest shrine in the Grand mosque in Mecca. Muslim pilgrims converged today on Saudi Arabia's Mount Arafat for the climax of this year's hajj, the smallest in modern times and a sharp contrast to the massive crowds of previous years Saudi Ministry of Media/AFP World news in pictures 30 July 2020 The Mars 2020 Perseverance mission lifts off at the Kennedy Space Centre in Florida. The mission is part of the USA's largest moon to Mars exploration. Nasa will attempt to establish a sustained human presence on and around the moon by 2028 through their Artemis programme EPA World news in pictures 29 July 2020 A woman refreshes herself in a outdoor pool in summer temperatures in Ehingen, Germany dpa via AP World news in pictures 28 July 2020 Malaysia's former prime minister Najib Razak speaks to the media after he was found guilty in his corruption trial in Kuala Lumpur AFP via Getty World news in pictures 27 July 2020 North Korean leader Kim Jong Un poses for a photograph after conferring commemorative pistols to leading commanding officers of the armed forces on the 67th anniversary of the "Day of Victory in the Great Fatherland Liberation War". Which marks the signing of the Korean War armistice KCNA via Reuters

Iranian leaders may calculate that, short of all-out war, they come out the winner: the US-led coalition of states that once isolated Iran has disintegrating and today it is the US that risks isolation. Germany, Britain, France, Russia and China and the UN nuclear watchdog all say that Iran has abided by the terms of the agreement. The ability of the US to line up all the other big powers in support of a deal brokered by itself was proof that the US was a superpower; its abandonment will have the opposite effect. As if this was not damaging enough to the US, turning over the whole mess to a dysfunctional Congress only highlights the implosion of US influence in the world.

Suggestions in western capitals that they might paper over the breach with America by disagreeing with Washington over the nuclear deal but supporting US allegations that Iran is trying to destabilise the Middle East do not really work. This demonisation of Iran as the sinister hidden hand in the Middle East is just as misleading and simple-minded as Trump’s views on the nuclear weapons deal. Much of what he and his administration says is regurgitation of Saudi and Israeli propaganda which may not even be believed in Riyadh and Tel Aviv.

Donald Trump's least presidential moments so far... Show all 30 1 /30 Donald Trump's least presidential moments so far... Donald Trump's least presidential moments so far... Threatening to shut down Twitter after being fact-checked After the president tweeted that voting by post would be "substantially fraudulent", Twitter attached a warning label to his tweet and referred readers to a site which explained how the claim was "unsubstantiated". Trump then said Twitter was "stifling free speech" and that he may have to shut it down, something which he would not have the power to do AFP/Getty Donald Trump's least presidential moments so far... Flippantly dismissing a serious allegation of sexual assault When author E Jean Carroll accused Trump of raping her, the president responded: “Number one, she’s not my type. Number two, it never happened. It never happened, OK?" AFP/Getty Donald Trump's least presidential moments so far... Insulting the Mayor of London as he landed in London Just before touching down at Stansted Airport for his state visit, Trump took time out to @ the London mayor Sadiq Khan on twitter. He said that Khan has done a "terrible job"as mayor and that he is a "stone cold loser" Reuters Donald Trump's least presidential moments so far... Taking plenty of "Executive Time" The president's official schedule sets aside the hours from 8 to 11am daily for "Executive Time". Further intermittent periods of "Executive Time" are scheduled throughout any given day, ranging from 15 minutes to 3 hours. His duties in these hours have not been officially disclosed, though Axios reports that he spends them watching TV, reading the newspapers and tweeting Getty Donald Trump's least presidential moments so far... Shutdown the government for over a month in an effort to secure funding for his wall With Mexico declining to pay for the wall, the president has faced difficulty in raising the required $5bn at home. Due to his demand that the money for the wall be included in the budget, and Congress's refusal, the government partially shut down on 22 December 2018. It remained shut for over a month, the longest period in history Getty Donald Trump's least presidential moments so far... Joking about the Nazi occupation of France to President Macron In this tweet from 13 November 2018, the president mocks Emmanuel Macron's suggestion of a "true, European army" by invoking the conflict between France and Germany in the world wars Donald Trump's least presidential moments so far... Railing against the Mueller investigation The president has repeatedly claimed that the Mueller investigation into Russian interference in the 2016 election, is a "rigged witch hunt" Reuters Donald Trump's least presidential moments so far... Contradicting a US intelligence report on Russian meddling in the presence of Vladimir Putin In the press conference that followed his landmark meeting with Russian president Vladimir Putin, Trump stated that he saw no reason why Russia would have meddled in the 2016 US election. This contradicted a 2017 report by the US Office of the Director of National Intelligence that found evidence of Russian interference in favour of Trump Getty Donald Trump's least presidential moments so far... Contradicting his contradiction of a US intelligence report on Russian meddling Following furious backlash in the US, the president claimed that he meant to say that he saw no reason why it would not have been Russia who meddled in the 2016 US election. As to why he would have intended to use such bizarre phrasing, he did not comment Reuters Donald Trump's least presidential moments so far... Colouring in the US flag wrong The president coloured in the US flag wrongly during a visit to a children's hospital in Columbus, Ohio. He added a blue stripe where in tradition, and statute, there have been only white and red stripes AFP/Getty Donald Trump's least presidential moments so far... Firing a Secretary of State over Twitter The president announced on Twitter that he was appointing Mike Pompeo as Secretary of State, much to the surprise of then Secretary of State Rex Tillerson Donald Trump's least presidential moments so far... Quoting a catchphrase from a reality TV show when discussing police brutality While addressing the issue of black athletes not standing for the national anthem in protest of police brutality, the president made reference to his catchphrase from reality TV show "The Apprentice": you're fired! Reuters Donald Trump's least presidential moments so far... Calling African nations "S***hole Countries" Ever one for diplomacy, the president reportedly referred to African nations as "s***hole countries". Asked to confirm this when meeting with Nigeria's President Buhari, Trump stated that there are "some countries that are in very bad shape". Reuters Donald Trump's least presidential moments so far... Defending Russian President Vladimir Putin Trump appeared to equate US foreign actions to those of Russian president Vladimir Putin, saying: “There are a lot of killers. You think our country’s so innocent?” Reuters Donald Trump's least presidential moments so far... Asking for people to 'pray' for Arnold Schwarzenegger At the National Prayer Breakfast, Trump couldn’t help but to ask for prayers for the ratings on Arnold Schwarzenegger’s show to be good. Schwarzenegger took over as host of “The Apprentice” — which buoyed Trump’s celebrity status years ago Getty Donald Trump's least presidential moments so far... Hanging up on Australian PM Malcolm Turnbull Early in his presidency, Trump reportedly hung up the phone on Australian prime minister Malcolm Turnbull after the foreign leader angered him over refugee plans. Mr Trump later said that it was the “worst call” he had had so far Getty Donald Trump's least presidential moments so far... The 'Muslim ban' Perhaps one of his most controversial policies while acting as president, Trump’s travel ban targeting predominantly Muslim countries has bought him a lot of criticism. The bans were immediately protested, and judges initially blocked their implementation. The Supreme Court later sided with the administration’s argument that the ban was developed out of concern for US security Getty Donald Trump's least presidential moments so far... Praising crowd size while touring Hurricane Harvey damage After Hurricane Harvey ravaged southeastern Texas, Trump paid the area a visit. While his response to the disaster in Houston was generally applauded, the president picked up some flack when he gave a speech outside Houston (he reportedly did not visit disaster zones), and praised the size of the crowds there AP Donald Trump's least presidential moments so far... 'Little Rocket Man' During his first-ever speech to the United Nations General Assembly, Trump tried out a new nickname for North Korea leader Kim Jong-un: Rocket Man. He later tweaked it to be “little Rocket Man” as the two feuded, and threatened each other with nuclear war. During that speech, he also threatened to totally annihilate North Korea Donald Trump's least presidential moments so far... Attacking Sadiq Khan following London Bridge terror attack After the attack on the London Bridge, Trump lashed out at London Mayor Sadiq Khan, criticising Khan for saying there was “no reason to be alarmed” after the attack. Trump was taking the comments out of context, as Khan was simply saying that the police had everything under control Getty Donald Trump's least presidential moments so far... Claiming presenter Mika Brezinkski was 'bleeding from the face' Never one not to mock his enemies, Trump mocked MSNBC’s “Morning Joe” co-host Mika Brzezinski, saying that she and co-host Joe Scarborough had approached him before his inauguration asking to “join” him. He noted that she was “bleeding badly from a face-lift” at the time, and that he said no MSNBC Donald Trump's least presidential moments so far... Claiming the blame for Charlottesville was on 'both sides' Trump refused to condemn far-right extremists involved in violence at 'the march for the right' protests in Charlottesville, even after the murder of counter protester Heather Heyer AP Donald Trump's least presidential moments so far... Retweeting cartoon of CNN being hit by a 'Trump train' Trump retweeted a cartoon showing a Trump-branded train running over a person whose body and head were replaced by a CNN avatar. He later deleted the retweet Donald Trump's least presidential moments so far... Tweeting about 'slamming' CNN Trump caught some flack when he tweeted a video showing him wrestling down an individual whose head had been replaced by a CNN avatar. Trump has singled CNN out in particular with his chants of “fake news” Donald Trump's least presidential moments so far... Firing head of the FBI, James Comey Trump’s firing of former FBI Director James Comey landed him with a federal investigation into Russia’s meddling in the 2016 election that has caused many a headache for the White House. The White House initially said that the decision was made after consultation from the Justice Department. Then Mr Trump himself said that he had decided to fire him in part because he wanted the Russia investigation Mr Comey was conducting to stop Getty Donald Trump's least presidential moments so far... Not realising being president would be 'hard' Just three months into his presidency, Trump admitted that being president is harder than he thought it would be. Though Trump insisted on the 2016 campaign trail that doing the job would be easy for him, he admitted in an interview that living in the White House is harder than running a business empire Reuters Donald Trump's least presidential moments so far... Accusing Obama of wiretapping him Trump accused former president Barack Obama of wire tapping him on twitter. The Justice Department later clarified: Obama had not, in fact, done so Reuters Donald Trump's least presidential moments so far... Claiming there had been 3 million 'illegal votes' Trump was never very happy about losing the popular vote to Hillary Clinton by 2.8 million ballots. So, he and White House voter-fraud commissioner Kris Kobach have claimed that anywhere between three and five million people voted illegally during the 2016 election. Conveniently, he says that all of those illegal votes went to Clinton. (There is no evidence to support that level of widespread voter fraud.) Donald Trump's least presidential moments so far... Leaving Jews out of the Holocaust memorial statement Just days after taking office, Trump’s White House issued a statement on International Holocaust Remembrance Day, but didn’t mention “jews” or even the word “jewish” in the written statement Getty Donald Trump's least presidential moments so far... Anger over Inauguration crowd size Trump’s inauguration crowd was visibly, and noticeably, smaller than that of his predecessor, Barack Obama. But, he really wanted to have had the largest crowd on record. So, he praised it as the biggest crowd ever. Relatedly, Trump also claimed that it stopped raining in Washington at the moment he was inaugurated. It didn’t, the day was very dreary Reuters

The relationship between Iran and the US has always been a complex mixture of hostility and cooperation. The antagonism dates from the overthrow of the Shah in 1979, the seizure of US diplomats and embassy in Tehran, and the Iran-Iraq war. But this has also been accompanied by a high degree of de facto – and often covert – cooperation: since Saddam Hussein’s invasion of Kuwait in in 1990, Washington and Tehran have often found themselves sharing the same enemies. Tehran benefited as a regional power in 2001 when the US overthrew the Taliban in Afghanistan and again in 2003 with the fall of Saddam Hussein. Iran and the US had a similar interest in preventing Isis and al-Qaeda winning in Syria or Iraq after Isis captured Mosul in 2014.

The US and its allies were always circumspect, when they were not being dishonest, about their cooperation with Tehran in Iraq. After Nouri al-Maliki was chosen as Iraqi PM in 2006, an Iraqi official called me to say that “the Great Satan”, the Iranian term for the US, and “the Axis of Evil”, the US term for Iran, had “come together to give us our new leader.” His successor, Haider al-Abadi, also required endorsement from both Washington and Tehran.

Trump nearly forgets to sign executive order on health care

One of the many negative consequences of the election of Trump is that his failings are so glaring that they obscure those of the rest of his administration and other US and international leaders. Hillary Clinton’s grasp of the likely consequences of US actions in Iraq, Syria and Libya was always limited. David Cameron and Nicholas Sarkozy happily led the way for Nato to overthrow Muammar Gaddafi with no sensible thoughts about the aftermath. Secretary of State Rex Tillerson won some credit by reportedly calling Trump “a moron”, but he quite untruthfully told the Iranian Foreign Minister Muhammad Javid Zarif that the US-Iranian “relationship has been defined by violence – against us”.

In reality, Iranian strength in the Middle East depends on its position as the leading Shia power and its influence is largely confined to countries with significant Shia communities: Iraq, Syria, Lebanon, Afghanistan and Yemen. The US, Saudi and Israeli picture of Iran, as permanently plotting to destabilise the Middle East, misstates Iranian ambitions and exaggerates their capacity.

Donald Trump laughs and jokes during solemn ceremony honouring US flag

So much of what Trump says turns out to be the soon-to-be forgotten tweet of the day, that the impact of decertification is impossible to predict. He denounced President Obama’s weakness in Iraq and Syria, but changed US policy has changed very little because the Pentagon largely calls the shots and he does not know what else to do. A summary of his new approach says the new policy will in future focus “on neutralising the government of Iran’s destabilising influence and constraining its aggression, particularly its support for terrorism and militants”. This could mean that in the future the US will regard anyone opposing Saudi Arabia or its allies as a terrorist or it could mean nothing at all.

The current crisis in the Middle East consists of multiple crises that cross-infect each other. The biggest crisis is with Isis which is facing defeat in Iraq and Syria, but is not quite eliminated. It has lost the war in both countries because it has been under attack from a range of enemies from the US air force to Hezbollah, Syrian Kurds, Iraqi Shia paramilitaries, Syrian army and Russians. These countries and movements may not like each other and may not coordinate their attacks on Isis, but cumulatively they have worn down the jihadis. Isis commanders will hope that the new Trump policy will open up divisions among its numerous enemies enabling it to survive and regenerate itself.