1968 -- Some 100 North Korean armed spies infiltrate South Korea's Uljin-Samcheok area in five groups.
Park had just pushed through his Yushin (Revitalizing Reform) Constitution, which gave the executive increased powers and the right to run for an unlimited number of terms in indirect presidential elections.
2018 -- The two Koreas hold sports talks and agree to formalize a bid to co-host the 2032 Summer Olympics.
In response, South Korea's fighter jets fire three precision-guided missiles into waters north of the NLL.
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