Russia confirmed the successful test of the Sarmat intercontinental ballistic missile as part of its nuclear force modernization.Vladimir Putin designated the weapon as the most powerful globally with capabilities designed to evade all existing missile defenses.The system is expected to enter combat service by the end of the year after the expiration of the final nuclear arms pact with the US.Strategic deterrence remains the primary goal as the country continues to develop advanced underwater drones and hypersonic glide vehicles.