India Successfully Tests K-4 Missile, Boosting Nuclear Triad and Underwater Deterrence
New Delhi, 26 December 2025: India has made a breakthrough in its nuclear deterrence strategy at sea by test-firing the K-4 submarine-launched ballistic missile (SLBM) off a nuclear-powered submarine, thus boosting the effective capability of its nuclear triad (land, air, and sea) considerably. The test was conducted on the INS Arighaat, which is a nuclear-powered…
