Nuclear weapons states Nuclear sharing United Nations Security Council Resolution 1887, adopted unanimously on 24 September 2009, the Council addressed non-proliferation and the prevention of the spread of weapons of mass destruction in the world.

[1] With this resolution, the Council seeks "a safer world for all and to create the conditions for a world without nuclear weapons in accordance with the goals of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), in a way that promotes international stability, and based on the principle of undiminished security for all."

It called on all countries to adhere to their obligations under the NPT, including co-operation with the International Atomic Energy Agency, and for nations to establish measures to reduce nuclear arms.

[2] The Council unanimously adopted the resolution.

Except for Libya, all members were represented by their heads of state or government.