Cameron says post-Brexit UK will remain committed to European defence

WARSAW (Reuters) - British Prime Minister David Cameron, who announced his resignation after losing a referendum on keeping Britain in the European Union last month, said on Friday his country would remain committed to European defence after it leaves the bloc. "What I'll be saying is that Britain may be leaving the EU but we are not turning our back on Europe and we're not turning our back on European defence and security," he told reporters on arrival at his final NATO summit before stepping d