Nuclear Deterrent Threat from North Korea - Bad Bluff

BBC News: Reports that North Korea has threatened to use its Nuclear Deterrent when the US and South Korea start their military exercises. Thus this is the worse kind of bluff folks, in less North Korea wants to commit suicide it will not attack the US Ships or South Korea, this is an attempt to rattle the Obama White House, its nuclear blackmail, think if it was Iran. Thus POTUS should get on with the military exercise but should add more US Ships just in case and place US Forces in the region on alert, just in case North Korea wants to start a War.