Security Service of Ukraine General Vasyl Vovk talks on camera about an exhibition called «Presence. Evidence of the Russian Military Aggression on the territory of Ukraine» took place Downtown Kiev at Mykhaylivska Square on February 21-28. The exhibition has been sponsored by the Presidential Administration of Ukraine. The Ministry of Defense of Ukraine participated in preparation of the exposition, particularly, it "has provided the captured heavy weapon delivered to the capital from the frontline. Press Service of the Ministry of Defense of Ukraine"