"It's the right thing to do," Obama said at the White House. "As commander in chief I will not allow Afghanistan to be used as safe haven for terrorists to attack our nation again."
Obama said the decision should show the Taliban that the only way to achieve a full drawdown of U.S. troops was to reach a settlement with the Afghan government. (Reporting by Jeff Mason and Roberta Rampton; Editing by Doina Chiacu)