With the kind of fanfare that only a totalitarian state can muster, North Korea on Saturday flaunted missiles that can theoretically reach the United States and defiantly stated that it was prepared to counter any U.S. attack with “a nuclear war of our own.”

But it soon looked like a case of style over substance. North Korea somewhat ruined the impression created with the parade, which took place on the most important day of the year for Kim Jong Un’s regime, with a failed missile launch Sunday morning.

The ballistic missile was fired from the Sinpo area on the east coast shortly before 6 a.m. local time, U.S. Pacific Command said. It blew up almost immediately, complicating efforts to identify the missile’s size and range.

North Korea fired a land-based version of its medium-range, submarine-launched ballistic missile from the same area earlier this month. That exercise also failed.