The representative of the military intelligence of Ukraine, Vadym Skibitsky, reported this in an interview with The New York Times.

These missiles were part of the weapons that Ukraine transferred to Russia in the 1990s as part of an international agreement to ensure Ukraine's sovereignty and territorial integrity. All ballistic missiles, Tu-160 and Tu-95 strategic bombers, were transferred. Now, these bombers are launching Kh-55 missiles against us.

According to Vadym Skibitsky, the missiles the terrorist country uses against civilian objects of Ukraine are, in particular, the Kh-55 subsonic cruise missiles developed in the 1970s with a nuclear warhead. The Russians remove the warhead from these missiles and add ballast to disguise the fact that the missile is not carrying a payload.