British Prime Minister David Cameron warned Saturday against withdrawing troops from Afghanistan too fast, after France said it would pull out a year before the international deadline of 2014. Speaking at a press conference with Afghan President Hamid Karzai, who was visiting London, Cameron said the speed of the NATO drawdown should depend on security conditions on the ground. "Obviously, between now and 2014 there will be opportunities for different countries to reduce their troop numbers. Britain has reduced our troop numbers over the last year," Cameron said.