Calls by the United Nations Security Council to isolate North Korea haven’t stopped Kim Jong Un from launching missiles over Japan or threatening America and its allies. This week President Trump told the General Assembly that the United States is prepared “to totally destroy North Korea” in the event of an attack. If the international community is serious about isolating the Kim regime, there’s a less drastic option not yet tried: expel North Korea from the U.N.

Since the U.N.’s founding in 1945, no member state has ever been expelled. The U.N. charter does, however, provide for eviction: “A Member of the United Nations which has persistently violated the Principles in the present Charter may be expelled from the Organization by the General Assembly upon the recommendation of the Security Council.”

North Korea never met the U.N. membership requirements to begin with. The charter says membership is open only to “peace-loving states” that promote “respect for human rights and for fundamental freedoms.” North Korea was admitted in tandem with South Korea on Sept. 17, 1991. At the time, with the Soviet Union in the process of collapse, the rationalization was that finally bringing North Korea into the U.N. fold might induce it to give up its brutal and predatory ways.