Transcript for North Korea successfully tests a ballistic missile capable of hitting the US

There is also breaking developments overseas tonight. President trump arriving a short time ago, and it comes amid that intensifying showdown with north kor Korea. A new warning. The president arriving in Poland, and the meeting with Vladimir Putin coming. Much of the focus right now, North Korea, successfully testing its first intercontinental ballistic missile capable of hitting the U.S. And what the Pentagon says about this. Here's Martha Raddatz tonight. Reporter: The missile launched by North Korea is more powerful and more sophisticated than anything that country has ever tested before. A two-stage intercontinental ballistic missile blasted straight up into space some 1,700 miles high. But here is what is so alarming. If the north Koreans angle the missile's trajectory for distance instead of altitude, experts say it could travel well over 4,000 miles. Meaning it could potentially hit Alaska or even come close to Seattle. Kim Jong-un gleefully calling it a package of gifts on Independence day. In response to the north Koreans, the U.S. And south Korea launch short range missiles up the coast of the Korean peninsula. There is still time for diplomacy, but the U.S. Ambassador to the U.N. Said, today is a dark day. Time is short. Action is required. The world is on notice. And so let's get to Martha Raddatz at our Washington bureau. The Pentagon said today that the missile the north Koreans launched is something the U.S. Has never seen before. Reporter: Right, David. This is exactly the kind of missile the U.S. Knew the north Koreans were working on, but we never expected it to be launched this soon. Experts say it is years ahead of schedule, David. Martha Raddatz, thank you. Years sooner as you heard the report there. Let's get to our military an cyst, Steven ganyard, and you saw what Martha raeported there. If it went along the same distance, and trajectory, it could be to the U.S. This is concerning, and what does North Korea have to do to complete the missile plan? They demonstrated they have a rocket that can reach the united States. This is what's disturbing. This is what we believe is a miniaturized nuclear warhead. We don't know if they can put the warhead with the rocket and have it survive the heat of re-entry. It's the last piece of the puzzle and they are working hard to get it. Last piece of the puzzle. Steve, thank you. The showdown happening at the

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