The Latest: Mattis says trust is question in Taliban talks

Former Defense Secretary James Mattis says that when it comes to trying to negotiate an Afghanistan peace deal with the Taliban, the key question is whether they can be trusted.Mattis says the U.S. since the Bush administration, has "demanded that they break with al-Qaida" but "they've refused to do so." He also says "we should never forget" that they were behind the Sept. 11 attacks.President Donald Trump says he was set this weekend to meet at Camp David with leaders of the Taliban.