Just a week after testing the nuclear-powered Burevestnik missile, Vladimir Putin has stunned the world again — this time with Poseidon, a 100-megaton underwater “doomsday torpedo.” Launched from the Belgorod submarine, Poseidon can dive a kilometer deep and unleash radioactive tsunamis capable of wiping out entire coastlines. Putin hailed the test as a “huge success,” boasting it’s even more powerful than the Sarmat ICBM. Analysts warn the weapon could render Trump’s proposed “Golden Dome” missile defense useless, marking Russia’s boldest nuclear escalation since the Cold War.