Right of conquest

The right of conquest is a right of ownership to land after immediate possession via force of arms. It was recognized as a principle of international law that gradually deteriorated in significance until its proscription in the aftermath of World War II following the concept of crimes against peace introduced in the Nuremberg Principles. The interdiction of territorial conquests was confirmed and broadened by the UN Charter, which provides in article 2, paragraph 4, that "All Members shall refrain in their international relations from the threat or use of force against the territorial integrity or political independence of any state, or in any other manner inconsistent with the purposes of the United Nations." Although civil wars continued, wars between established states have been rare since 1945. Nations that have resorted to the use of force since the Charter came into effect have typically invoked self-defense or the right of collective defense.