Labour leader Jeremy Corbyn has condemned the US missile attack on a Syrian airbase - warning it risks escalating the country's civil war further.
He said the UK - instead of backing the action as it has done thus far - should "urge restraint" from the Trump administration and reconvene the Geneva peace talks.
Tuesday’s horrific chemical attack was a war crime which requires urgent independent UN investigation and those responsible must be held to account.
But unilateral military action without legal authorisation or independent verification risks intensifying a multi-sided conflict that has already killed hundreds of thousands of people. What is needed instead is to urgently reconvene the Geneva peace talks and unrelenting international pressure for a negotiated settlement of the conflict.
The terrible suffering of the Syrian people must be brought to an end as soon as possible and every intervention must be judged on what contribution it makes to that outcome.
The British government should urge restraint on the Trump administration and throw its weight behind peace negotiations and a comprehensive political settlement.
Boris Johnson looks "daft" and is in "deep political trouble" after pulling out of a meeting with the Russians, Alex Salmond has said.
The defence secretary condemned Vladimir Putin's Kremlin for its role in Bashar Assad's suspected chemical weapons attack on his own people.
The leading critic of the Trump administration has told ITV News the US and its allies must build on the president's justified airstrikes.