President Barack Obama and British Prime Minister David Cameron during a joint news conference in the White House in Washington, yesterday. During the news conference, Mr Cameron said he would work to renegotiate Britain’s ties with the European Union before putting the question of membership in the EU to the voters. Photograph: Doug Mills/The New York Times

David Cameron’s dramatic decision to publish a draft Bill on the EU referendum appeared to have failed to quell backbench rebellion over Europe(...)