N.Korea behavior 'can't continue', Trump advisor warns after missile test

The United States slammed North Korea's latest missile test as a provocation and insisted Sunday it is working closely with China to resolve a crisis that Washington sees as reaching a critical stage.Amid broader fears that North Korea may again test a nuclear bomb, the Pentagon said Sunday's missile launch was a failure, with the weapon blowing up almost immediately after its early morning takeoff near Sinpo on North Korea's east coast.Amid sharply heightened tensions, McMaster said the US and