The National Security Agency in 2010 provided the US ambassador to the United Nations with background information on several governments and their embassies that were undecided on the question of Iranian sanctions.
In May 2010, as the UN Security Council was attempting to win support for sanctions against Iran over its nuclear-energy program, which some say is a front for a nuclear weapons program, several members were undecided as to how they would vote. At this point, the US ambassador to the world body, Susan Rice, asked the NSA for assistance in her efforts to “develop a strategy,” leaked NSA documents reveal.
The NSA swung into action, aiming their powerful surveillance apparatus at the personal communications of diplomats from four non-permanent Security Council members — Bosnia, Gabon, Nigeria and Uganda. This gave Rice an apparent upper-hand in the course of the negotiations.