Largely overshadowed by the war in Ukraine, Syria remains a deeply divided and violent country, where military conflict has recently reignited.

This new period of conflict in Syria, with Russia, Turkey and Israel all launching attacks, also reflects some of the battle lines of the Ukrainian war – and threatens to have ramifications for both battlegrounds.

After more than a decade of war, there are already significant numbers of Russian, US and Turkish forces on the ground in Syria. Russia backs the regime of president Bashar al-Assad, and the US and Turkey support their own rival local allies.

A highly combustible mix of local, regional, and global security risks have evolved over the past decade in Syria and has been exacerbated by the war in Ukraine. Global and regional forces have been a significant factor, while Russia used the war to illustrate to the world its military strength.

Now, Russia is potentially the biggest beneficiary of Turkey’s recent military gamble to unleash air strikes on local US allies in Syria. It could help strengthen Vladimir Putin’s relationship with Turkey’s president Recep Tayyip Erdoğan at a time when Russia desperately needs influential allies.

When a bomb exploded in a busy pedestrian area of Istanbul on November 13, killing six people and wounding dozens more, Turkey blamed the Syrian Democratic Forces (SDF), a mainly Kurdish militia group based in Syria, that Ankara links to the Kurdistan Workers Party, the PKK.

The SDF, which denies any links to the Istanbul bomb attack, is also Washington’s main ally in Operation Inherent Resolve, a US-led coalition effort against Islamic State (IS).

Subsequent Turkish airstrikes against SDF targets in Syria and continuing threats of a ground invasion are bad news for the war against IS and bad for relations between Washington and Ankara, who are, after all, also Nato allies. Warnings, including from US defence secretary Lloyd Austin, have so far succeeded in staving off a Turkish ground campaign in Syria.