A Yemeni boy (C) walks past a mural depicting a US drone and reading " Why did you kill my family" on December 13, 2013 in the capital Sanaa. A drone strike on a wedding convoy in Yemen killed 17 people, mostly civilians, medical and security sources said, adding grist to mounting criticism of the US drone war. AFP PHOTO/ MOHAMMED HUWAIS (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)
