South Korea forges pact with U.S. against possible North Korea attack
The plan lays out how the allies will communicate with each other and react to any future aggression from North Korea.
It provides for a joint response from the two countries, even if there is a limited attack from the North.
North and South Korea are still technically at war after signing an armistice, not peace treaty. Previously, help from the US and its 28,000 troops in South Korea was optional in minor skirmishes.
In the event of a large-scale resumption of war, according to GlobalPost senior correspondent in Korea, Geoffrey Cain, the US will assume operational command over all forces in South Korea.