Nuclear Weapons Tests: YouTube videos
The Tsar Bomb
The largest bomb detonated in history was the 57,000 kiloton (57 Megaton) Russian test in 1961. The fireball was 110 miles in diameter; the radius of the fire zone = about 64 miles. The total area of mass fire, or firestorm, would have been greater than 10,000 square miles if detonated over a large city or urban area.
Speeches against nuclear weapons testing