Here's why tritium is vital for thermonuclear weapons. According to a press release ... with intercontinental ballistic missiles of the M45 or M51 families, capable of carrying up to 10 MIRV ...
The M51 is the sixth iteration of the French SLBM (submarine-launched ballistic missile), succeeding the M1, M2, M20, M4, and M45 missiles. The work on this weapon's presently developed variant ...