Obama: Time has come to wind down Afghan war

WASHINGTON — Amid fresh con­cerns over the safety of Amer­i­can forces, Pres­i­dent Barack Obama on Tues­day said the acci­den­tal burn­ing of Qurans in Afghanistan and the retal­ia­tory killings of U.S. troops gave new cre­dence to the need to end the war.