President Trump’s October 2025 directive to resume U.S. nuclear explosive testing on parity grounds with suspected Chinese and Russian activity remains the central catalyst, yet trader-implied probabilities stay low through 2026. Recent non-nuclear chemical explosive experiments at the Nevada National Security Site in September and October 2026 underscore the administration’s emphasis on detection capabilities and stockpile stewardship rather than full-yield detonations. Congressional opposition, including Senate holds and visits highlighting existing certification methods, combines with NNSA and Strategic Command assessments that no technical or military requirement exists for explosive tests. Diplomatic pressure on China over alleged low-yield events and 6-to-36-month preparation timelines further constrain near-term action, aligning market pricing with the 30-year moratorium precedent.