The UK says it "fully supports" the US missile strike in Syria and has urged Russia to put more pressure on the Assad regime to end the civil war.

Defence Secretary Michael Fallon said the UK was not asked to take part but backed the "wholly appropriate" strike.

But Labour Leader Jeremy Corbyn said the US action "risks escalating the war in Syria still further".

Fifty-nine Tomahawk cruise missiles were fired from two US Navy ships in the Mediterranean. Six people were killed, the Syrian army said.

The strike comes days after dozens of civilians, including children, died in a suspected nerve gas attack on the rebel-held town of Khan Sheikhoun in north-western Syria.