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  The war began with a massive and successful crossing.
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  Thirty five nations signed the Helsinki Accords.
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  The Camp David Accords were the result of 18 months of intense diplomatic efforts.
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  Ayatollah Khomeini arrived in Iran to a welcoming crowd, ending 15 years in exile.
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  The crisis has been described as an entanglement of "vengeance and mutual incomprehension".
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  The reason given by Israeli leaders for the attack into Lebanon was ‘to root out the Palestine Liberation Army and stop their terrorist attacks into Israel.
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  to use ground and space-based systems to protect the United States from attack by strategic nuclear ballistic missles
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  was a clandestine action not approved of by the United States Congress.
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  The Treaty Between the United States of America and the Union of Soviet Socialist Republics on the Elimination of Their Intermediate-Range and Shorter-Range Missiles.
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  was a barrier constructed by the German Democratic Republic