The United Nations has been ineffective in stopping the war in Ukraine. The UN has not been able to get Russia and Ukraine to agree to a ceasefire. Russia has been supporting the separatists in Ukraine and has been accused of supplying them with weapons for years. The UN has also been unable to get the United States and Europe to agree to sanctions against Russia. The UN has been ineffective because it has been unable to get Russia and the United States to agree on anything.