8 Most Powerful Nuclear Bombs in the World in 2017

6. B53 (Mk-53) Nuclear Bomb

Explosive Force: 9Mt

B53 (Mk-53) Nuclear Bomb was one of the highest yield bombs in the US history. This bomb was the oldest one to get that kind of yield power. It was a two-stage nuclear bomb using highly enriched uranium and enriched fusion fuel. It was retired from the service in 1997.