One of the central components of the Treaty on the Prohibition of Nuclear Weapons (TPNW) is its victim assistance and environmental remediation provisions (known collectively as the Treaty’s ‘positive obligations’). While there is much to celebrate about efforts to remedy the damage caused by nuclear weapons, the way the TPNW distributes responsibility for this work is troubling. Under the Treaty, the primary responsibility for fulfilling the positive obligations is placed on the states parties that have individuals under their jurisdiction who are affected by the use or testing of nuclear weapons and areas under their jurisdiction or control that have been contaminated by the use or testing of nuclear weapons (‘the affected states’) despite the fact that, often, these were not the states responsible for detonating the nuclear weapons. This article examines and critiques the reasons the Treaty’s drafters placed the main responsibility for victim assistance and environmental remediation on affected states. It argues that the rationales underpinning these provisions rest on shaky grounds, and that the Treaty’s approach has potential negative ramifications for nuclear disarmament and understanding the history of the use and testing of nuclear weapons. Further, it explores how the Treaty may play into worrying broader dynamics in public international law whereby the Global North is frequently absolved of responsibility for the harms it causes while the Global South is saddled with obligations to redress an array of harms.