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.

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

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

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

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

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

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

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

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