After the Cold War ended, the process of nuclear disarmament began to stagnate and in recent years there are signs of backsliding. Efforts to revive the disarmament regime over decades culminated with the drafting and ratification of the UN Treaty on the Prohibition of Nuclear Weapons in 2017 and 2021 respectively, much to the dismay of nuclear weapons states. The U.S., Britain, and France have declared their dismissal of the treaty while subscribing to the disarmament regime as established by the Non-proliferation Treaty of 1970.  The Western nuclear powers typically channel their opposition through NATO, and this thesis will first look at NATO’s legal arguments and as the strategy of nuclear deterrence which is fundamental to their defensive strategy. I will then investigate NATO discourse as it pertains to nuclear weapon strategy as a constituent of its subjectivity and intentionality. In other words, what it is like to “be” NATO, and in so doing understand why it acts in opposition to a goal it already pursues.  This is relevant to IR in that it explores an alterative manner in which to understand social structures while adhering to research designs typically ascribes to the “lower” unit of analysis of individuals.