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Last Updated:August 18, 2025, 17:53 IST
The Tsar Bomba, made by the Soviet Union in 1961, is the world's most powerful nuclear bomb. Its 50-megaton yield is 3,000 times stronger than the Hiroshima bomb.

The discussion of nuclear weapons resurfaces every time global tensions flare up, whether in the Iran–Israel conflict or during the heated standoff between India and Pakistan. Even former US President Donald Trump once remarked, "We stopped nuclear war." But behind these headlines lies a chilling question: which nation truly holds the world’s most powerful nuclear bomb? (News18 Bengali)

To understand the scale, one has to look back to August 1945. When the United States dropped *Little Boy* on Hiroshima and *Fat Man* on Nagasaki, the world witnessed the destructive power of nuclear weapons for the first time. (News18 Bengali)

The Hiroshima bomb carried a 15 kiloton yield, while the Nagasaki bomb was 25 kilotons. The devastation forced Japan’s surrender but also marked the beginning of the nuclear age. Since then, nuclear weapons have evolved to unimaginable magnitudes. (News18 Bengali)

Today, the most powerful nuclear bomb ever created does not belong to America, India, or Pakistan, but to Russia. Known as the 'Tsar Bomba', this weapon was designed and tested by the Soviet Union in 1961 and remains unmatched in destructive capability. (News18 Bengali)

The bomb was initially built with a capacity of 100 megatons of TNT, though it was later reduced to 50 megatons to limit the fallout. Even at half capacity, it is around 3,000 times more powerful than the Hiroshima bomb. The test explosion produced a fireball eight kilometres wide and a mushroom cloud rising 60 kilometres high. The shockwaves circled the Earth multiple times. (News18 Bengali)

Experts estimate that if a Tsar Bomba were dropped on a major city, everything within 35 kms would be completely annihilated. Fires would rage across a 100-kilometer radius, and windows would shatter hundreds of kms away. The radioactive fallout from a single detonation could poison vast areas for decades. (News18 Bengali)

The consequences of multiple such explosions would be catastrophic. Scientists warn of a possible 'nuclear winter', a scenario where smoke and dust block sunlight, global temperatures plunge, and ecosystems collapse. Humanity’s survival itself could be at stake. (News18 Bengali)

Fortunately, no nuclear bomb of this magnitude has ever been used in actual warfare. The single test conducted in October 1961, over Novaya Zemlya near the Arctic Circle, remains the only time the Tsar Bomba was detonated. (News18 Bengali)

Dropped from a height of 4,000 metres, it was more a demonstration of Soviet power than a usable battlefield weapon. (News18 Bengali)

Decades later, the Tsar Bomba still stands as the largest and most destructive nuclear device ever built, a chilling reminder of the destructive potential of humankind’s most dangerous technology. (News18 Bengali)
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