British Foreign Secretary Philip Hammond, left, and US Secretary of State John Kerry, right, attend a NATO foreign ministers meeting at the Alliance's headquarters in Brussels on December 2, 2014. (Yves Herman/Reuters photo)
British Foreign Secretary Philip Hammond, left, and U.S. Secretary of State John Kerry, right, attend a NATO foreign ministers meeting at the Alliance's headquarters in Brussels December 2, 2014. (Yves Herman/Reuters photo)