missile only days after successfully detonating its most powerful nuclear weapon. north korea's state-run media claims kim jong-un's military is ready to, quote, blow up the u.s. main land and annihilate americans. let's check in with our pentagon krt barbara starr. barbara, how is the u.s. military responding? >> reporter: right now, wolf, nobody is engaging in very much cool, calm, collected talk about all of this. there's a lot of rhetoric from washington all the way to pyongyang. right now hard to see how this all ends. new live fire drills by south korea's navy as tensions continue to rise. several war ships sending a message to kim jong-un south korea will hit back against any provocation. president trump sending his own message, tweeting, i am allowing japan and south korea to buy a substantially increased amount of highly sophisticated military equipment from the united states.