During World War I, militaries across the globe were still using the bolt action rifle, and machine guns were just entering the world of modern warfare. Artillery could only make a crater the size of a building. Then entered the atomic bomb in World War II; dropped over Hiroshima and Nagasaki, the atomic bomb wiped the cities clean off the map. It was a weapon of mass destruction. Not only could the bomb destroy large areas with its massive explosion, it had a dangerous after effect that continued the chain of destruction: radiation.
Many nations are pursuing the construction of the atomic bomb. Countries that control nuclear weapons not only have power, but the opportunity to alter the world with force. Kim Jong-Un of North Korea is building nuclear weapons. They pose a threat to South Korea and other surrounding countries. Iran has also been building atomic bombs, which threatens the U.S and also the world.
On August 6, 1945, the first atomic bombs were dropped over Hiroshima and Nagasaki bringing World War II to a close. Thousands of civilians died from the blast, and the dangerous radiation the bomb left behind. The atomic bomb has changed modern warfare and the world, not only because of its capabilities, but because its power. The lives of millions could be ended by the pressing of a single button.