The U.S. imperialist aggressor forces committed more than 110 cases while the south Korean puppet army at least 90 cases.

On May 28 and 29, the U.S. imperialist aggressor forces' overseas-based five RC-135s flew into the air over south Korea and were busy with aerial surveillance and photographing and electronic espionage against all areas of the DPRK.

South Korea-based U-2 made shuttle flights from the east to the west all day long on May 30 to spy on the DPRK. The number of cases of aerial espionage perpetrated by this plane reached 25 this month.

The U.S. imperialists and the south Korean puppets let more than 40 strategic and tactical reconnaissance planes fly in the air over the front areas to intensify the espionage against the DPRK side in the period from May 7 to 13 when they were busy with combined air battle exercises in the air over areas of south Korea.

In the meantime, the south Korean bellicose forces let two or three tactical reconnaissance planes make shuttle flights in the air over front areas in the East and West seas and the areas along the Military Demarcation Line day and night every day on spy missions.