The first Preparatory Committee (PrepCom) meeting of the nuclear Non-Proliferation Treaty's (NPT) 2026 Review Conference is currently underway in Vienna. The NPT, which entered into force in 1970, is one of the most successful and useful treaties in the world, with 190 states signing up to its provisions. This first PrepCom in the NPT review cycle is an important exercise in gaining the best possible outcome for the 2026 Review Conference. The NPT was designed to prevent the spread of nuclear weapons, deemed to be highly dangerous and destabilizing to international security.