The Biological and Toxin Weapons Convention (BWC) celebrates its 50th anniversary in 2025, a historical milestone for the first treaty to ban an entire class of weapons. Despite major shortcomings and barriers, the BWC remains a stalwart bulwark against the deliberate misuse of biology. In this special feature, experts from around the world highlight critical challenges and opportunities for the BWC, honoring the treaty’s first half-century and drawing lessons from past experiences, but more importantly, looking ahead to envision the next 50 years of biological weapons disarmament and nonproliferation.
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