Nagasaki commemorates the 78th anniversary of the devastating US atomic bombing.

'Fat Man,' the second nuclear bomb, struck Nagasaki on August 9, 1945, three days after Hiroshima's devastation.

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Japan's Prime Minister Fumio Kishida offers condolences and reaffirms commitment to a world free of nuclear weapons.

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United Nations Secretary-General Antonio Guterres emphasizes the urgency of eliminating nuclear weapons.

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The decision to use atomic bombs was driven by the desire to expedite Japan's surrender and end WWII.

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'Little Boy,' the first atomic bomb, was dropped on Hiroshima, leading to around 140,000 casualties.

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The 'Fat Man' bomb caused instant destruction, killing over 80,000 people and prompting Japan's surrender.

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Nagasaki suffered long-term effects with at least 70,000 initial deaths and more succumbing to radiation illnesses.

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The anniversary serves as a solemn reminder to work towards a world without nuclear weapons and lasting peace.

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