As we start the tenth year after the onset of the Arab uprisings, there is, sadly, little hope that there will be peace, democratic transition and stability in the Middle East.

2019 will not bring much positive change to the region: Ongoing conflicts are unlikely to be resolved, some may even get worse and new ones may break out.

In this continuing upheaval, the United States will certainly play the most important role. The political wrangling between President Donald Trump and the Washington establishment, in particular, is likely to determine the direction of much of US foreign policy towards the region.

It is widely expected that, in 2019, Special Counsel Robert Mueller will make more revelations about the results of his investigation into alleged Russian interference in the 2016 presidential elections. Therefore, Trump will likely seek to distract the public by taking dramatic decisions on foreign policy; the Middle East will be the easiest target.

Already at the end of 2018, there were clear indications of this trend. Trump's mid-December surprise decision to withdraw over 2,000 US troops from northeast Syria was widely seen as an attempt to appease his support base, consolidate power and rein in administration officials who disagreed with him.

Apart from the continuing unpredictability of US foreign policy shifts, major developments in the Middle East in 2019 will largely be determined by six major issues: the conflicts in Syria and Yemen, the Gulf crisis, the US confrontation with Iran, the Palestinian-Israeli conflict and regional rivalries.

The Syrian conflict

Despite the defeat of the Syrian opposition and the retaking of large swaths of land by pro-regime forces in 2018, the Syrian conflict is far from over. More than 40 percent of Syria's territory is still not under the control of the Damascus government.

The withdrawal of US troops from the oil, gas and water-rich northeast is likely to fan the competition between the major external powers in the conflict: Turkey, Russia, and Iran. This is likely also to affect the de-militarised zone agreement in Idlib, which prevented a major onslaught on the last opposition stronghold last September.

The Syrian conflict may very well enter a new phase of proxy warfare, wherein the US gives Turkey the responsibility of blocking Iran in the territories that it intends to evacuate. The withdrawal of US forces would also stimulate a more aggressive Israeli approach in Syria.

After the US withdrawal, Israel will have to rely solely on its own efforts to counter Iran's influence in Syria and will seek to increase its military activities on Syrian territory. It will, however, face one major challenge - Russia, which controls Syrian airspace. In September, an incident involving Israeli fighter jets led to the downing of a Russian surveillance plane and the death of its 15-member crew. This infuriated Moscow, which has so far refused to continue its close military coordination with Israel.

Increasing tensions between the major foreign players in Syria are likely also to delay even more a political solution of the conflict. So far the Astana trio (Russia, Turkey and Iran) has failed to agree on the formation of the constitution committee. Now with the withdrawal of the US troops from Syria, the likelihood of an agreement has become even slimmer; in fact, the entire Astana process could collapse. The parallel UN-led peace negotiations have also reached a dead end.

The US withdrawal also means that the US is effectively abandoning its Kurdish allies, the People's Protection Units (YPG). This will likely result in a dramatic improvement in Turkish-US relations and a restart of their alliance in Syria. This will certainly upset Russia, which is likely to increase its reliance on Iranian militias to fill the vacuum left behind by the US in northeast Syria. Realignment could also bring the YPG, fearing a Turkish military offensive, closer to Russia and the Syrian regime.

The war in Yemen

Despite the ceasefire agreement in the port city of Hodeidah and the notable progress that was made in the negotiations between the warring parties in Sweden, a final settlement of the four-year conflict is still a distant possibility.

Indeed, the weakening position of the Houthis following their loss of territory over the past two years and the enormous pressure the Saudi leadership is facing to stop the war in the aftermath of the murder of Saudi journalist Jamal Khashoggi, may have made it easier for UN envoy Martin Griffiths to bring the warring parties together in Sweden.

Yet, the two sides are still convinced that they can win militarily. The Houthis think that the Saudis will eventually have to bow to international pressure, stop the war and abandon their endeavours in Yemen. The Saudi-led coalition, on the other hand, believes that recent progress on the ground, especially in Hodeidah, will eventually force the Houthis to accept their terms to end the war.

Iran, too, is still unwilling to help reach a final settlement. Tehran seeks to keep the Saudis bogged down in Yemen so that they would not have the resources to deal with its activities on other fronts in the Middle East. Iran also wants to use the Yemen conflict as a bargaining chip in a grand deal to lift US sanctions and salvage the Joint Comprehensive Plan of Action (JCPOA) after Trump's withdrawal last May.

The Gulf crisis

Despite extensive Kuwaiti mediation efforts and increasing US pressure on Saudi Arabia, there are no indications that the Gulf crisis will be ending any time soon. In early December, Saudi Arabia refused to discuss the crisis at the last GCC summit in Riyadh, to which Qatar sent only a low-level delegation.

The four blockading countries (Saudi Arabia, UAE, Bahrain and Egypt) believe that time is on their side and that Qatar will eventually accept their demands. Qatar, on the other hand, thinks that it can weather the blockade and wait for the four to realise that they are in fact shooting themselves in the foot.

In 2019, this standoff will likely persist. For mere geographic reasons, Qatar will have to continue relying on Iran to evade the blockade. It will also strengthen its alliance with Turkey and has allowed the latter to establish a military presence in the Gulf for the first time since the end of World War I.

The Iran-US standoff

Following the withdrawal of the US from the JCPOA last May, Washington unilaterally re-imposed sanctions on Iran in two rounds: the first one started in August and the second and toughest started in November, hitting Iran's oil and financial sectors.

Fearing soaring oil prices, the Trump administration gave six-month waivers to eight countries importing Iranian oil. Come May, when the waivers expire, Trump will have to decide whether to fulfil his promise of working to bring Iranian oil exports to zero.

If he does, Iran, which is largely dependent on its oil revenue for hard currency, is likely to consider the move a declaration of war. In retaliation, it could act on its threats to close the Strait of Hormuz, through which some 20 percent of the world's traded oil passes. This would effectively block other Gulf states from accessing the oil market. Although many consider this a hollow threat, the possibility of an escalation is real as the US tightens the noose around Iran's neck.

If Iran chooses not to block the Strait of Hormuz, it has the capacity to retaliate in other places, especially in Iraq. It has already urged its allies in the Iraqi parliament to try to abrogate the 2008 treaty which made the US military presence in Iraq legal.

Pro-Iran Shia militias have also threatened to target US troops in the country. The resumption of the US-Iran conflict in Iraq could benefit the Islamic State of Iraq and the Levant (ISIL) group, which last year was greatly weakened but not eliminated. Hence Iraq could see further political and security turmoil in 2019 should tension between Iran and the US increase.

The Israeli-Palestinian conflict

In 2019, Israel is likely to continue taking unilateral measures to establish new realities on the ground in Palestine, taking advantage of the full support it receives from the Trump administration and the continuing turmoil in the Arab world and within the Palestinian leadership. In fact, Israel is working with the Trump administration on two fronts in order to completely erase the Palestinian question.

First, it seeks to take the so-called "final status issues" off the negotiation table, most importantly the status of Jerusalem and the right of return for Palestinian refugees. The US has already recognised Jerusalem as the capital of Israel and has moved its embassy to the western part of the city. It has also halted funding for the United Nations Relief and Works Agency for Palestine Refugees (UNRWA), demanding that the agency change the definition of a refugee in order to resume its financial contributions.

If UNRWA caves in, the number of Palestinian refugees who receive aid will drop from several million to a mere few hundred thousand. This will also determine the number of Palestinian refugees when the right of return is discussed in any future peace talks.

Second, the US is working towards establishing an anti-Iran Arab-Israeli alliance. It is expected that the Trump administration will present in the new year the much anticipated "ultimate deal" to impose some form of settlement to the Palestinian-Israeli conflict and pave the way for the aforementioned Arab-Israeli alliance. Normalisation is already under way between several Arab countries and Israel and we will see more of it in the coming year.

Regional polarisation

As these Middle East conflicts deepen, political alignments in the region create corresponding faultlines and increased polarisation. Since World War I, political divisions in the Middle East have always mirrored those of the world order du jour. During the Cold War, the Middle East was divided between the Soviet and US camps.

Today these divisions are deeper in nature and greater in number. They also reflect a degree of independence from the broad trends of the international system. Hence, instead of having two camps, we have now three: the so-called "resistance" axis of Iran, Iraq, Syria, and Hezbollah, which is supported to a certain extent by Russia and China; the counter-revolution axis made up of Saudi Arabia, the UAE, Bahrain, Egypt and Jordan and backed by Israel; and the pro-change axis of Qatar and Turkey. These three axes are caught in the middle of a vicious conflict to decide the future of the Middle East.

All these issues are likely to dominate the political scene in the Middle East in 2019 and we probably won't see the end of any of them. In 2018, the Middle East was one of the most volatile parts of the world and is likely to remain so in 2019.

The views expressed in this article are the author's own and do not necessarily reflect Al Jazeera's editorial stance.