Jacklyn Majnemer is a Stanton Nuclear Security Fellow in the MIT Security Studies Program. Previously, she was an International Relations Department Fellow at the London School of Economics and Political Science (LSE). She received her PhD in International Relations at LSE. Her doctoral dissertation examined why states renege on previously fulfilled alliance commitments, despite the incentives to cooperate, focussing on Canada’s nuclear sharing commitments to NATO and NORAD during the Cold War. She completed her MPhil in International Relations at the University of Oxford and her BA in Political Science at McGill University.