The Treaty on the Prohibition of Nuclear Weapons (TPNW), which became part of international law on the 22nd of January, was a watershed moment for nuclear disarmament. The TPNW, which was ratified by fifty states in October after being supported by 122 state governments in 2017, started a 90-day counting down to come into effect. Apart from establishing precise legal responsibilities, the TPNW has a considerable political aspect. Although states with nuclear arms will only dismantle when and if they want to, international and domestic pressure on them to do this will increase, and they will lose control of the narrative surrounding ...

President Donald Trump has long criticized the Iran nuclear deal, and his actions already have threatened a few of the treaty’s difficult security benefits. But his current step is a flagrant violation of international law that should be condemned, particularly by countries like Canada that embrace a multilateral system rules-based. Canada and other countries facing US pressure must understand why Iran rejected an agreement that would have eased crippling sanctions and offered much-needed economic relief. The order in which things happen is critical. When the US pulled out of the accord in 2018, it did so in flagrant ...