A thawing of tensions between the two superpowers seems as far away as it was under Obama.
Donald Trump suddenly appears to have been overcome with a sense of responsibility towards the people of Syria. How can that be explained?
The question now is how recent critical changes will impact on-the-ground military strategy.
The US military's attack on a Syrian airforce base sets a worrying precedent of brashness and uncertainty in how the Trump administration may handle future crises in international relations.
The individual most directly responsible for a colossal humanitarian crisis is still in power – and might be for some time.
Although the uprising in Syria will mark its sixth anniversary this month, the Syrian war has far from run its course.
This year may be a critical turning point for Syria and the five-year civil war, at least for the Assad regime, which is…
Bashar al-Assad, Vladimir Putin and Recep Tayyip Erdogan have a long history as leaders of their countries and players in the Syrian war.
More than five years into a catastrophic, multi-sided war of attrition, a new order for Syria is coming into view.
In the Middle East, there will be no easy choices for the incoming Trump administration - and a wild ride is likely to continue.
The Assad regime's takeover of Aleppo is a major strategic and psychological blow for the Syrian opposition.
With the rebels on the back foot and the US sidelined, other major players hold the keys to Syria's future.
The most disastrous conflict to break out in the Obama years is still nowhere near its end. It could have been very different.
Muslims everywhere were offended and psychologically shocked by the president-elect’s views. But Syria and Egypt think they can benefit from a Trump presidency.
Encounters with Western countries continue to colour political discourses, including on gender in turbulent Syria. But women's influence is more diverse and powerful than what is portrayed.
World powers including Russia, the US and Turkey all have a stake in the Syrian conflict – but the networks they rely on for influence are constantly in flux.
The problem with Syria is that all sides have their own reasons for acting the way they do – and they all think they're right.
We're unlikely to see the Syrian leader face charges for crimes against humanity any time soon.
Critics claim that Russia and Syria are targeting civilians with thermobaric 'vacuum' bombs.
The survival of civilians seem forgotten in a new U.S. and Russian agreement to root out IS and other terrorists in Syria.