President Barack Obama is calling for a radical reduction in the number of his country’s nuclear weapons. He wants to cut the stockpile from about 2,100 to less then 1,000, narrow the range of conditions for when nukes can be used, and explore ways to keep the bombs reliable without testing or creating any new weapons. This comes as a lead up to a UN Security Council session aimed at nuclear disarmament and the prevention of nuclear proliferation which Obama is set to chair.