From North Korea's official Rodong Simmun news agency:
Written on the upper parts of the stamps are letters "The June 25-July 27 month of anti-U.S. joint struggle".
One of the stamps deals with the poster "Don't forget, the U.S. imperialist wolves!" condemning the horrible massacres committed by the U.S. imperialists on the land of Korea during the Korean war and calling for a thousand-fold revenge upon them.
Another stamp which deals with the poster "Wipe out the U.S. imperialist aggressors, the sworn enemy of the Korean people!" reflects the mettle of the service personnel of the People's Army to wipe out the aggressors to the last one so that there would be no one left to sign a document of surrender once Supreme Commander Kim Jong Un issues an order and accomplish the historic cause of national reunification without fail.
File under "political philately".