The Foreign Secretary William Hague has said there should be no "regrets or recrimination" after the government lost a vote on military action against Syria. He also ruled out a renewed attempt to persuade MPs, saying "Parliament has spoken".
A protest march against military intervention in Syria staged by the Stop the War coalition has reached London's Trafalgar Square.
David Cameron has backed Barack Obama after the president announced he is seeking congressional support to launch military action in Syria.
David Cameron accepted the public did not want intervention in Syria. But he might have got a different result if his ministers voted.