Afghan President Karzai made announcement March at a security conference . In a letter to troops late last month , U.S. Gen. David Petraeus voiced a similar sentiment , saying the surge `` inflicted enormous losses '' on militants and weakened terror networks . Coalition forces will start shifting security responsibilities to Afghan in Sunday , he says . Hamid Karzai credits the surge of international forces with improving security on the ground . He also outlines steps aimed at preventing corruption in Afghanistan .
Afghan President Karzai made announcement March at a security conference . Coalition forces will start shifting security responsibilities to Afghan in Sunday , he says . Hamid Karzai credits the surge of international forces with improving security on the ground . He also outlines steps aimed at preventing corruption in Afghanistan .