The US has carried out a missile strike against a Syrian air base in response to a suspected chemical weapons attack on a rebel-held town.
Fifty-nine Tomahawk cruise missiles were fired from two US Navy ships in the Mediterranean. Six people were killed, the Syrian army said.
It is the first direct US military action against forces commanded by Syria’s president.
The Kremlin, which backs Bashar al-Assad, has condemned the strike.
Dmitry Peskov, spokesman for Russian President Vladimir Putin, called it “an act of aggression against a sovereign nation”.