Suicide Bombing in Kabul

Two Afghan security forces soldiers stand guard at the site of a suicide attack in Kabul, Afghanistan, Oct. 13, 2014.

A U.S. soldier takes his position near the site of a suicide attack in Kabul, Afghanistan, Oct. 13, 2014.

U.S. soldiers remove a destroyed vehicle from the site of a suicide attack in Kabul, Afghanistan, Oct. 13, 2014.

U.S. soldiers remove a destroyed vehicle from the site of a suicide attack in Kabul, Afghanistan, Oct. 13, 2014.

U.S. and Afghan security forces inspect the site of a suicide attack in Kabul, Monday, Oct. 13, 2014.

U.S. and Afghan security forces gather at the site of a suicide attack in Kabul, Afghanistan, Oct. 13, 2014.

NATO troops investigate at the site of a suicide attack in Kabul, October 13, 2014.

A U.S. soldier keeps watch at the site where a suicide car bomber rammed a foreign convoy along a major road out of Afghanistan's capital, Kabul, Oct. 13, 2014.