“Some experts argue that nuclear weapons are already illegal under international law. Meanwhile, the United States—with 1,750 deployed nuclear weapons—and eight other nuclear-armed nations unequivocally consider them legal. Adopted in 2017, the Treaty on the Prohibition of Nuclear Weapons is an initiative to build a comprehensive legally binding instrument to prohibit nuclear weapons. As a PSR Spring 2020 intern, one of my main projects was to look at the various debates about different aspects of the legality of nuclear weapons. I have researched and written reports on Nuclear-Weapon-Free zones, the production/possession, testing, disposal, use of nuclear weapons, and also at defense alliances like NATO. These aim to help the reader understand the legal frameworks surrounding these questions on nuclear weapons.”