In December, the U.S. imperialists committed at least 110 cases and the south Korean war maniacs more than 70 cases, at least 180 cases in total.

U-2 belonging to the warmongers of the U.S. imperialist aggression forces perpetrated more than 290 cases of aerial espionage, their RC-12 at least 500 cases and their RC-7B over 280 cases this year.

Their overseas-based RC-135, EP-3, E-3 and E-8C flew into the air above areas of south Korea periodically this year to spy on all areas of the DPRK.

The war maniacs of the south Korean puppet armed forces have become more frantic in their aerial espionage against the DPRK in collusion with the U.S. imperialist aggression forces.

Their RC-800 perpetrated at least 580 cases of aerial espionage while their RF-4C committed more than 170 cases this year.

These numbers and facts go to clearly prove how frantically and desperately the U.S. imperialist aggressors and the war mongers of the south Korean puppet armed forces have stepped up the preparations for a war of aggression against the DPRK.