Islamabad: Pakistani Prime Minister's Adviser on Foreign Affairs Sartaj Aziz, right, shakes hand with U.S. Secretary of State John Kerry, after their joint press conference in Islamabad, Pakistan, Tuesday, Jan. 13, 2015. Kerry praised the Pakistani military's operation against militants in the country's northwest, saying the results are "significant." AP/PTI(AP1_13_2015_000084B)