British prime minister David Cameron has delivered a major speech on Europe, calling for Britain's relationship with the European Union to be redefined.
Mr Cameron has promised a referendum on whether Britain stays in or leaves the EU if he wins the next election.
But before he asks people to vote, he wants to renegotiate the UK's relationship with the EU.
He says it needs to be more flexible and that the EU needs to address the growing gap between it and its people and its lack of democratic accountability.
"The danger is that Europe will fail and the British people will drift towards the exit," he said.
Britain's Labour leader, Ed Miliband, has said the speech would define Mr Cameron as a PM driven by his backbenchers and not the nation's economic interest.