The crossword puzzle clue today is "20th-century treaty topic". To solve this puzzle clue, we look for the similarity crossword puzzle definitions for our clue. Below are the possibilities crossword solution and answer for "20th-century treaty topic". Good luck! :).

 20th-century treaty topic :

TEST BAN

The US, UK and Soviet Union signed what is now called the Partial Nuclear Test Ban Treaty in 1963. This partial ban was prompted due to concerns at the time about levels of radioactive elements in the atmosphere, particularly in the southern hemisphere, caused by an increasing number of test detonations. The partial test ban prohibited all detonations other than those performed underground. It took another 33 years before a Comprehensive Nuclear-Test-Ban-Treaty could be negotiated, one which was adopted by the UN General Assembly in 1996. Sadly, as we are all well aware, it has never been enforced. Enforcement is waiting on ratification by China, Egypt, Indonesia, Iran, Israel as well as the United States, and signatures from India, North Korea and Pakistan.

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