EU summit extended as Cameron struggles for British deal

By Kylie MacLellan and Paul Taylor BRUSSELS (Reuters) - A European Union summit to negotiate new membership terms for Britain was forced into extra time on Friday as Prime Minister David Cameron struggled for a deal he could sell to sceptical British voters in a referendum. A plenary session was postponed for several hours and the 28 leaders were asked to book hotel rooms for an extra night in Brussels. "The session scheduled for 4 p.m. (1500 GMT) has just been cancelled and the meeting of leade