India has taken a significant step in strengthening its nuclear deterrence with the successful test launch of the K-4 submarine-launched ballistic missile (SLBM) on December 23, 2025. Multiple ...

Although the K-4 missile still requires a few more test-firings before full operational induction, the successful launch from INS Arighaat marks another decisive step in India’s journey toward a ...

India has achieved a major strategic milestone with the successful test of its K-4 submarine-launched ballistic missile (SLBM ...

India reportedly tested a nuclear-capable submarine-launched ballistic missile this week. The test launch, not officially ...

SLBMs can be launched from underwater nearly anywhere in the world—and are incredibly difficult to intercept, making them ideal second-strike nuclear weapons. The submarine-launched ballistic missile ...