Complex sentence: The Trident II Strategic Weapons System is an improved SLBM with greater accuracy, payload, and range than the Trident C-4, comprising a key element of the U.S. strategic nuclear triad and strengthening U.S. strategic deterrence.
Split into simpler sentences: The Trident II Strategic Weapons System is an improved SLBM with greater accuracy, payload, and range than the earlier Trident C-4. It is a key element of the U.S. strategic nuclear triad and strengthens U.S. strategic deterrence.