President Trump made this comment the other day. "Rocket Man" should have been handled a long time ago. Well.................. In 1996, the United Nations worked to adopt Comprehensive Nuclear Test Ban Treaty (CTBT) to completely ban nuclear explosions "by everyone, everywhere: on the Earth's surface, in the atmosphere, underwater and underground." So far 163 countries have fully agreed to abide the treaty, according to the UN commission in charge of the test ban, including France, the UK, and Russia.