Afghan President Hamid Karzai accused the Taliban and US forces of working together on Sunday. He said Saturday's suicide bombings, which coincided with Secretary of Defense Chuck Hagel's visit, were meant to show violence will worsen if foreign troops leave.
About 20 people were killed in two suicide bombings in Afghanistan Saturday. A Taliban spokesman said the attacks were a message for Secretary of Defense Chuck Hagel, who is in Afghanistan for his first official visit.
A teenage suicide bomber blew himself up outside of NATO headquarters in Kabul Saturday. The Taliban has claimed responsibility for the attack, which is thought to have been an attempt to undermine the US-led effort to increase security in Kabul.
Reports of suicide bomb vests inside the Afghan Department of Defense were eventually dismissed as false, but they pointed to US concerns about Taliban infiltrators or rogue troops attacking US soldiers or the Afghan government.