US military refuses to be intimidated after Russia threatens to target every US aircraft it finds west of the River Euphrates in Syria

The US has told Russia that it will not back down after Moscow threatened to target American and coalition planes and drones found in the west of the River Euphrates in Syria.

The threat from Moscow came after the US shot down a Russia-allied Syrian fighter bomber on Sunday afternoon after the plane dropped bombs near US-allied Syrian Democratic Forces (SDF). Russia condemned the US for shooting down the Russian plane then threatened to retaliate if US aircraft is seen in west Syria.