"Something had to be done" in the wake of an alleged chemical weapons attack by the Syrian government on its own people, the Defence Secretary has said.
Speaking to ITV's Good Morning Britain, Michael Fallon said he was given advance notice of America's decision to launch airstrikes on the airfield from where the alleged chemical weapons originated.
Prime Minister Theresa May was kept informed about the strikes throughout, he said, and supported the US fully.
He said the UK had "never seen a long-term future for [Syrian President Bashar al]-Assad," and said the strikes had been careful not to involve Russian personnel.
We fully support this strike - it was limited, it was appropriate, and it was designed to target the aircraft and the equipment that the US believe were used in the chemical attack; and to deter President Assad from carrying out future chemical attacks.
President Assad and the Syrian regime have continued to flout international law. We've caught them using chemical weapons and gases elsewhere, and this latest incident in which nearly 100 people seem to have been killed is yet another example of, if action is not taken, innocent civilians are going to die at the hands of this appalling gas.
Something had to be done about it and we fully support the American action.
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.