President Trump’s claim that the Soviet Union invaded Afghanistan in 1979 to get rid of terrorists who were coming over the border is false, according to declassified U.S. and Soviet documents posted today by the National Security Archive at George Washington University.

Just as false, according to the documents, were the repeated U.S. media assertions at the time, driven by President Carter’s national security adviser Zbigniew Brzezinski, that the Soviet motivation was “the age-long dream of Moscow to have direct access to the Indian Ocean” (Document 8).

Soviet Politburo documents that first became available in the 1990s show the real Soviet fear was that the head of the Afghan Communist regime, Hafizullah Amin, was about to go over to the Americans.  (Egyptian president Anwar Sadat famously flipped in 1972, ejected thousands of Soviet advisers, and became the second largest recipient, after Israel, of U.S. foreign aid.)