The UN Security Council is the main organization of the United Nations dedicated to the resolution of conflicts and peacekeeping. It is composed of fifteen members, five of whom are permanent, namely China, France, the Russian Federation, the United Kingdom and the United States, and ten of which are elected by the General Assembly every two years.
Peacekeeping missions allow the Security Council to watch over the cease-fire and participate in the creation of conditions for peace. On a few rare occasions, the Security Council has authorized member States to use all the necessary means to keep the peace, including collective military action.

The actual concepts of UN is not happening.... Whatever US decides.... that is almost final