Original sentence: This struggle, known as the Cold War, lasted from about 1946 to 1991, beginning with the second Red Scare and ending with the August Coup when the Soviet Union collapsed
Edited sentence: This struggle, known as the Cold War, lasted from about 1946 to 1991, beginning with the second Red Scare and ending with the August Coup when hardliners temporarily ousted Gorbachev's government, causing the Soviet Union to implode