October 16

On October 16, 1964, in the salt flats of Lop Nur in eastern Xinjiang, the People’s Republic of China detonated its first atomic device — an implosion‑type plutonium bomb with an estimated yield of about 22 kilotons — announcing itself as the world’s fifth nuclear power and reshaping regional and global strategy.

A 13-day nuclear standoff between the United States and the Soviet Union from October 16–28, 1962, triggered by U‑2 reconnaissance photos taken over Cuba on October 14, 1962, that revealed Soviet medium- and intermediate-range ballistic missile sites being built on the island. The crisis brought the superpowers to the brink of nuclear war before a negotiated settlement — public Soviet withdrawal in exchange for a U.S. promise not to invade Cuba and a secret U.S. agreement to remove Jupiter missiles from Turkey — defused the confrontation.

Beginning with a breakout from the Jiangxi Soviet on October 16, 1934, the Long March was a year-long series of retreats by disparate columns of the Chinese Red Army across southern and central China. Harsh terrain, disease, battle losses, and internal political crisis reduced tens of thousands of soldiers to a remnant that reached a new base in northern Shaanxi by October 1935 — a retreat that became the foundation myth and strategic turning point for the Chinese Communist Party.