Strikes expected to hit militia in Syria and potentially Iraq, after three US servicemen killed on Sunday
Middle East crisis – live updates
The US has ordered a series of reprisal strikes to be launched over more than one day against an Iranian-backed militia, the US defence secretary, Lloyd Austin, has said.
Austin said all drones in the region attacking the US were of Iranian origin. The attacks are expected to hit militia in Syria and possibly Iraq, though Austin did not specify the timing or precise location.