If Russian dictator Vladimir Putin continues to prosecute his self-chosen war in Ukraine, the United Nations ought to use its Article 42 powers to do a collective military intervention against Russian forces.

It can and should do so after implementing Ukraine’s suggestion to evict Russia from the U.N. Security Council, because the U.N. never officially authorized Russia to take the former Soviet Union’s permanent Security Council seat. Furthermore, as Russia is brazenly violating the U.N. Charter, it could and should be booted from the whole assembly, regardless. Without a veto from Russia, the U.N.’s collective security provisions can be activated and a no-fly zone enforced in order to keep Ukraine from being conquered.