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Hiroshima atomic bomb: The US nuclear attack that changed history, Aljazeera, 7 Aug 19,

As Japan marks 74th anniversary of world’s first nuclear bomb attack, we examine the events that shaped history. Japan has marked 74 years since a US atomic bomb attack that razed the city of Hiroshima to the ground at the end of World War II.

Around 50,000 people, including representatives from around the world, attended on Tuesday a ceremony held in the Peace Memorial Park near ground zero to honour the memory of the victims of the world’s first nuclear bomb attack.

In a speech, Hiroshima Mayor Kazumi Matsui called on the international community to work towards a world without atomic weapons.

Below we take a look at the events that shaped the course of history.

What happened in Hiroshima?

On August 6, 1945, at about 8:15am Japanese time, the US aircraft Enola Gay dropped an untested uranium-235 gun-assembly bomb nicknamed “Little Boy” over Hiroshima.   The devastation was unlike anything in the history of warfare, ushering in the era of weapons of mass destruction.

Hiroshima was immediately flattened. The resulting explosion killed 70,000 people instantly; by December 1945, the death toll had risen to some 140,000.   The radius of total destruction was reportedly 1.6km.

“The impact of the bomb was so terrific that practically all living things – human and animal – were literally seared to death by the tremendous heat and pressure set up by the blast,” Tokyo radio said in the aftermath of the explosion, according to a report by The Guardian in August 1945.

“All the dead and injured were burned beyond recognition. Those outdoors were burned to death, while those indoors were killed by the indescribable pressure and heat.”

But the damage did not end there. The radiation released from the explosion caused further suffering. Thousands more died from their injuries, radiation sickness and cancer in the years that followed, bringing the toll closer to 200,000, according to the Department of Energy’s history of the Manhattan Project. …..

The bombings were as questionable back then as they are today. Six out of seven five-star US generals and admirals at the time felt there was no need to drop the bomb because Japanese surrender was imminent. …….

The power of the atomic bomb would usher a change in geopolitics that still reverberates to this day, with several countries currently vying to acquire this technology.

The Doomsday Clock

In 1947, the scientists involved in the Manhattan Project created the Doomsday Clock, which represents the likelihood of a man-made global catastrophe, with midnight symbolising the destruction of civilisation as we know it.

Last year, the clock was adjusted to two minutes to midnight, the closest it has been to doomsday.  In 2019, the Bulletin of the Atomic Scientists maintained the “two minutes to midnight” time, citing continuing climate change, US and Russian nuclear modernisation efforts; information warfare threats and other dangers from “disruptive technologies” such as artificial intelligence, synthetic biology and cyberwarfare.  https://www.aljazeera.com/news/2019/08/hiroshima-atomic-bomb-nuclear-attack-changed-history-190806100602771.html