Allied Council of Ambassadors divided Upper Silesia between Germany and Poland. Germany was awarded three fifths of the plebiscite area but Poland gained the most with the region's coal fields. (see March 20, 1921) Subsequently, another treaty was concluded on May 15, 1922, the German-Polish Accord on East Silesia (Geneva Convention), which dealt with the matter of establishing a constitutional and legal framework for Upper Silesia (which had partly become Polish territory.)
Russian Missile Test Launched: On October 20, 1961, the Soviet Union succeeded in surpassing the United States in the nuclear race by launching and testing its first SLBM with a live nuclear warhead; the R-13 was detonated in the Novaya Zemlya Test Range in the Arctic Ocean. Ten days later the Soviets launched the gigantic 50 Mt Tsar Bomba's detonation in the same general area. It wasn't until May 6, 1962 that the United States conducted a similar test in the Pacific Ocean, with a Polaris A-2 launched from USS Ethan Allen (SSBN-608) as part of the nuclear test series code-named Operation Dominic.