On October 24, 2025, France officially commissioned the advanced M51.3 submarine-launched strategic ballistic missile, marking a significant enhancement in its nuclear deterrent capabilities. The missile features a new TNO-2 nuclear warhead, boasts increased range and accuracy, and is designed to penetrate evolving missile defenses, thereby reinforcing France’s second-strike capability amid rising global nuclear tensions, particularly with adversaries like Russia. Deployed on the Le Triomphant-class submarines, this development aligns with France’s 2024-2030 Military Programming Law, which aims to modernize defense capabilities and ensure strategic autonomy. This advancement not only strengthens France’s deterrent posture within NATO but also underscores its commitment to national security in an increasingly complex geopolitical landscape.