US EU Nuclear Sharing. Benefits and Challenges

This paper examines the NATO nuclear sharing arrangement, focusing on its benefits and challenges within the U.S.-EU security framework. Nuclear sharing involves the U.S. deploying B61 nuclear bombs in select European NATO countries, with host nations providing delivery systems and infrastructure while the U.S. retains full control, ensuring compliance with the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). The arrangement strengthens NATO’s deterrence posture, promotes alliance cohesion, and supports non-proliferation by dissuading the development of independent nuclear arsenals.

Recent geopolitical tensions, especially Russia’s invasion of Ukraine, have intensified calls for expanding sharing to countries like Poland, enhancing deterrence on NATO’s eastern flank. Exercises such as Steadfast Noon validate operational readiness and signal resolve.

Critics, however, highlight legal and escalation risks, potential NPT violations, and domestic opposition in host countries. Despite these issues, nuclear sharing remains a crucial component of Euro-Atlantic security, adapting to evolving threats while balancing deterrence, alliance unity, and non-proliferation goals.