FILE - In this Thursday, March 2, 2017 file photo, Sartaj Aziz, adviser to Pakistan's prime minister for foreign affairs, speaks during a press conference in Islamabad, Pakistan. Pakistan vowed Tuesday, March 14, to prevent non-nuclear states from gaining the technology that would enable them to start down the path to acquiring nuclear weapons, even though both Islamabad and neighbor New Delhi defied non-proliferation treaties to become competing nuclear powers. (AP Photo/Anjum Naveed, File)