Joint US-South Korean military execrcises running until August 31st prompt a warning from North Korea to tear up the 1953 armistice truce and launch an all-out war. It’s part routine and part unusual. North Korea has a new leader — Kim Jung-un — who is testing reforms. He faces an entrenched military; the US has been implementing its new Asia-Pacific strategic initiative; and China and Russia are keen that power remains balanced. Some of the nuances laid out here — http://bit.ly/OhJC7z and the spectre of violence clearly not yet gone away.