As we approach the 50th anniversary of the entry-into-force of the Nuclear NonProliferation Treaty (NPT) in 2020, it is essential the NPT can evolve to meet contemporary security challenges, including by contributing meaningfully to nuclear disarmament. More broadly, re-establishing international consensus on the security value of disarmament and arms control is vital to safeguard not just the disarmament and nonproliferation regime, but also the rules-based international order of which it is a core part.