The US is reportedly producing B61-13 gravity bombs, 24 times stronger than the Hiroshima bomb, citing urgent threats from Russia and China. Driven by escalating geopolitical tensions, the production began earlier than scheduled. The B61-13 boasts a 360-kiloton payload, significantly exceeding the 15-kiloton 'Little Boy' bomb. This move strengthens US nuclear deterrence, particularly given the war in Ukraine and NATO commitments.