The U.S.is on the verge of withdrawing from a decades-old military treaty.In August 2017,an unarmed Russian Air Force aircraft flew over the U.S.Capitol,the Pentagon,the Central Intelligence Agency and the Joint Base Andrews at a low altitude and then landed at the McConnell Air Force Base in Wichita,Kansas.It was not a Hollywood movie plot,nor did the Russian military jet accidentally enter U.S.airspace.
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