Obama urges UK to wait for EU reforms before deciding to leave

US President Barack Obama on Monday said Britain's membership in the European Union was an expression of its influence in the world and urged Britons to watch whether EU reforms were successful before deciding to leave the multi-nation bloc.

"I think the UK's participation in the EU is an expression of its influence and its ... role in the world," Obama said during a news conference with visiting British Prime Minister David Cameron at the White House. (Reuters)