And you thought global warming was the biggest crisis the world faces.

On Tuesday, a Muslim screaming “Allahu akbar” and “Infidel, you must die” stabbed four people, killing one, at a train station near Munich. Nonetheless, Bavarian security officials immediately denied that he “had an Islamic extremist motive.” Then what caused the attack? Bavaria’s state interior minister Joachim Herrmann said that the attacker had “mental disorders.”

There you are. Nothing to do with Islam here, folks. Don’t go jumping to conclusions that these stabbings had something to do with Islam just because he screamed “Allahu akbar” and “Infidel, you must die.” He was mentally ill. That’s all.

In fact, we have seen this kind of mental illness in Muslims before:

France: Muslim destroys Christmas decorations, screams “Allahu akbar”: “His mental state, quickly found wanting, required his placement in the specialized hospital Allonnes.”

France: Muslim driver ramming pedestrians while screaming “Allahu akbar” was “absolutely not an act of terrorism”: “‘This is absolutely not an act of terrorism,’ Prosecutor Marie-Christine Tarrare told reporters during a press conference, adding that the man had a ‘long-lasting and severe psychological disorder’ and had been hospitalised over 150 times since 2002.”

UK: Imam accused of recruiting for jihad group doesn’t have to wear electronic tag — it breaches his human rights: “A terror suspect last night won a human rights case to have his tag removed – because he thinks MI5 has put a bomb inside it. A judge said the dangerous preacher of hate has mental health problems, and wearing the electronic monitoring device was making him ‘delusional’.”

California: Muslim arrested in mosque vandalism: “His older sister describes Khan as having schizophrenia.”

Muslim NYPD cop killer told passers-by to watch: “The gunman who fatally ambushed two New York City police officers in their squad car had a long criminal record, a hatred for police and the government and an apparent history of mental instability that included an attempt to hang himself a year ago, police said Sunday.”

France: Muslim who stabbed rabbi gets four years: “Haddouche was deemed unfit to stand trial because of mental issues following a psychiatric evaluation…”

Toronto Muslim charged with carrying concealed meat cleaver into Parliament: “RCMP Commissioner Bob Paulson told reporters that Ali is known to authorities, but ‘not in the sort of counter-terrorism context.’ In fact, Paulson does not believe that the man’s actions were politically motivated or an act of terror. ‘I understand it is less a concern around so-called national security considerations as it is a mental health issue,’ he said. ‘There is a history of behaviours that are odd.‘”

Austria: Muslim drives car into crowd, killing 3, then gets out and stabs passersby: “Police are not currently investigating terrorism as a motive and the man is believed to be suffering from mental illness.”

Canada: Police shoot Muslim wearing apparent suicide vest and holding triggering device: “In the aftermath of the shooting, police downplayed the incident saying only that the call involved ‘an emotionally disturbed person.‘”

Muslim bangs on cockpit door, threatens to down plane, “wanted to see Allah”: “After being held back from the cabin door, which could not have been opened anyway, the man, who fellow passengers said appeared to have mental health issues, was then guarded by staff and the sports stars in business class.”

Muslima who beheaded toddler recently became religious, started wearing hijab: “One theory is that the woman is mentally ill and that she may have been exploited by a man or men she knew.”

Canada: Ottawa shooter’s father waged jihad in Libya in 2011; shooter not a recent convert but a longtime Muslim: “Michael Zehaf-Bibeau, the slain 32-year-old suspected killer of a Canadian Forces soldier near Parliament Hill, was a labourer and small-time criminal – a man who had had a religious awakening and seemed to have become mentally unstable.”

Canada: Muslim acting “in the name of Allah” runs down two soldiers, flips car after chase, charges officers with long knife, is shot: “‘We are at the beginning of an investigation. Several hypotheses are being looked at,’ said Sgt. Michel Brunet, adding that investigators would study various angles, including mental illness and terrorism.”

Philly cop shooter: “I follow Allah. I pledge my allegiance to the Islamic State. That is why I did what I did.”: “Archer’s mother has indicated that he is mentally ill and Ross said investigators do not know yet if the suspect was indeed radicalized or tied to terrorism.”

Oklahoma: School evacuated after “Middle Eastern” woman says she came there to “take the kids to heaven”: “During the news conference, police also said that the woman had been having mental health concerns recently.”

Chattanooga jihad murderer viewed Awlaki material online, spoke of Islamic martyrdom as long ago as 2013: “As the F.B.I. sent more investigators into this city Monday to explore dozens of possible leads, a picture took shape of a deeply troubled young man who struggled with mental illness and drug abuse at the same time he found himself alienated from United States policies in the Arab world, according to the authorities, friends and the family representative.”

Colorado Muslim stabs cop, drops Qur’an during struggle: “At about 2 p.m. Saturday, the suspect’s family told law enforcement that they were worried because Clark left his residence in Penrose and said he wasn’t going to return. They also said Clark was mentally disturbed, had been working out a great deal during the last two months and recently had broken up with his girlfriend.”

NYC police commissioner: Hatchet attack by convert to Islam was terror: “Authorities also are trying to determine if Thompson had any history of mental illness.”

UK Muslim who admitted sharing jihad videos rants about “enemy of Islam court”: “Ahmed, who has a history of mental health problems, pleaded guilty to two counts of dissemination of a terrorist publication.”

France: Muslim screaming “Allahu akbar” tries to strangle police officer: “Other police officers saw the events on the video surveillance system and rushed to save their colleague, who had been thrown to the ground. His assailant was said to have a history of psychiatric problems.”

Spain: Violent Muslim screaming “Allahu Akbar, all you Christians will die!” gets arrested: “Later, he was administered comprehensive tests to ascertain if he was under the influence of drugs or suffered from a mental illness.”

UK Muslim gets 20 years for trying to set up jihad training camp in Oregon: “Haroon Aswat, who has been treated for mental illness in the UK, had pleaded guilty to the charges in March after being extradited from Britain to the US last year.”

France: Knife-wielding Muslim teen screams “Allahu akbar,” shoots teacher with BB gun: “A psychiatric examination was scheduled for 13 October, with the teenager is likely to be brought before a judge.”

Colorado Muslima pleads guilty to conspiring to aid Islamic State: “Moore set sentencing for Jan. 23, saying he wanted time for Conley to undergo more complete psychiatric testing. ‘I desire more information’ on her mental state, he said, asking for both a psychological and personality evaluation.”

Are you starting to see a pattern?

What could account for this global outbreak of mental illness, that always manifests itself in similar ways? Authorities should start asking themselves why so many mentally ill people embrace Islamic jihad violence. This sort of thing happens so often that the Diagnostic and Statistical Manual of Mental Disorders should consider adding “Islamic jihad” as a mental illness to its next edition.

Forget global warming – what are Obama and Kerry and the learned theorists in North America and Europe doing about this curious epidemic of mental illness?