Dictator Efraín Rios Montt declared himself the president of Guatemala.
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Rock star Paul McCartney's 'Ram' album went Gold.
The first ballistic missile submarine was launched from Groton, Connecticut, US.
A peace treaty was signed between NATO, Yugoslavia, and Serbia.
Soviet Space Program's Vega 1, which was launched on December 15, 1984, released a space probe to enter Venus.
British Parliament was broadcasted live.
