Complex sentence: The 1979 Iranian Revolution; the 1979 energy crisis; the April 1980 failure of Operation Eagle Claw to rescue United States diplomatic personnel from Tehran, and the acknowledgment of a Soviet combat brigade in Cuba reinforced the appearance of weakness.
Split into simpler sentences: The 1979 Iranian Revolution and the April 1980 failure of Operation Eagle Claw to rescue United States diplomatic personnel from Tehran. The acknowledgment of a Soviet combat brigade in Cuba reinforced the appearance of weakness.