Gates ' trip comes a day after he visited Iraq , where he attended a change of command ceremony that marked the end of the U.S. combat mission there . CNN : He says American troops will eventually leave Afghanistan . NEW : Transition to Afghan security forces will begin next year , he says . NEW : Karzai says parliamentary leader died in airstrike .
CNN : He says American troops will eventually leave Afghanistan . NEW : Transition to Afghan security forces will begin next year , he says . NEW : Karzai says parliamentary leader died in airstrike .