Transcript for North Korea Threatens to 'Settle Accounts With U.S.'
with the new threats from north korea. Kim jong-un has ordered his military to prepare for missile strikes against the u.S. Right after american stealth bombers flew a warning mission 50 miles from the border. Jim avila has the latest. Reporter: Good morning, george. These are fresh threats from the north korean, public demonstration, troop movements and propaganda video promising to destroy american bombers. North korea is ref be up its people holding anti-american rallies with thousands chanting anti-u.S. And south korean rhetoric. Its leader promising to ready its rockets to settle accounts with the united states. The u.S. Monitoring their troop movement which reportedly include repositioning troops from their midrange to long range base. North korea's propaganda machine publishing two new pictures, one an image of leader kim jong-un appearing to direct flight or attack plans on the board behind him and in reaction to the u.S. Stealth bomb flyover this picture of north korean missiles blowing up the unstealth b-52 bomber. The united states in a rare confirmation sent north korea a message yesterday by conducting a b-2 bomber practice mission 50 miles from the north korean border, a message primarily designed to reassure the nervous south korea. Those exercises are mostly to assure our allies that they can count on us to be prepared and to help them deter conflict. Reporter: The b-2 stealth bombers are capable of dropping 16uclear bombs, each on a different target. But these bombers dropped only dummy weapons. We will unequivocally defend and we are unequivocally committed to that alliance with south korea and we will be prepared. Reporter: North korea saying it will send its rockets to guam and hawaii. Those are considered empty threats because there's no evidence they have that capability. George? Okay, jim, thanks a lot. Much more sunday on "this week" and I'll be joined by cardinal timothy dolan to discuss the first easter for pope francis.
This transcript has been automatically generated and may not be 100% accurate.