Simplified North Korean timeline
War, NK + China almost wins.
MacArthur + Inchon
NK complains
China hates US barely more than they hate NK so they don't quit
Stalemate
Cease-fire
NK complains and threatens
US gives aid
NK complains, violates armistice terms
US gives sanctions
NK complains, violates armistice terms
US and SK give aid
NK complains, violates armistice terms
US and world gives sanctions
NK complains, violates armistice terms
US and SK give aid
NK complains, violates armistice terms
US throws military exercise intended to work towards turning security over to SK
NK complains, violates armistice terms
US gives aid
NK complains, builds nuclear reactor with aid materials
US gives sanctions
NK threatens war, violates armistice terms, tosses rocket at Japan, shells SK occupied island
US gives sanctions
NK complains, violates armistice
US gives aid
NK complains, violates armistice terms
US throws the exact same exercise it has conducted for last 20 years
NK complains, threatens, violates armistice terms, launches rocket, detonates nuke
And the latest entries...
US backs off because the news reported 2 ship movements to the area that were not part of the annual exercise, and we apologize to everyone for making NK more nutso than usual
NK, failing to see the humor in this development, transports 2 medium range ballistic missiles into firing positions and prepares them for launch.
US goes WTF we was just kidding come on now, secdef and secstate are noobs sry