Britain sets nuclear vote as NATO underlines need for deterrent

By Robin Emmott and Wiktor Szary WARSAW (Reuters) - Britain's outgoing prime minister David Cameron set a July 18 vote for parliament to decide on renewing Britain's nuclear deterrent, in a surprise move seemingly timed to underscore London's commitment to European security at a NATO summit. Political divisions about whether to replace the Trident submarines, backed in principle by parliament in 2007, have raised questions about Britain's standing as a world power, amplified by Britain's vote to