A new North Korean video portrays President Barack Obama and American troops in flames and says the North conducted its recent nuclear test because of U.S. hostility.

The video posted on YouTube follows a string of critical rhetoric against the United States and another video this month showing an American city being attacked by missiles.

Sunday's video overlaps the image of a blazing fire over Obama walking near his helicopter and shaking hands with congressmen. The one-and-a-half-minute video ends with a generic simulation of a nuclear device exploding underground.

The United States is currently negotiating in the Security Council for stronger U.N. sanctions against Pyongyang for the Feb. 12 nuclear blast that was its third test since 2006.