Knee. A Denver Broncos Linebacker Bombs the latest to protest during the National Anthem. Im against Social Injustice. Lets talk, live in the cnn newsroom. And good morning, im carol costello. Thank you so much for joining me. North korea says it has carried out the most powerful nuclear test yet. The explosion registering the force of a 5. 3 earthquake, kim jonguns government saying it can make Nuclear War Heads to fit on to missiles. President obama and other World Leaders strongly condemning it. We have the team covering the angles. We begin in tokyo, though, with cnns will ripley. Hi, will. Reporter hi, carol. Just within the last hour, japanese Prime Minister shinzo abe says this test has taken the test from north korea to a new level and that sentiment was reiterated by the president park. They are fanatically reckless. Were learning about the size of the explosion which triggered the earthquake, stronger than the 5. 1 triggered. It is believed this explosion was, and this is com