Russian Defense Ministry Spokesperson Igor Konashenkov said on Friday that if Ukraine attacks or commits sabotage on Russian soil, then Moscow will ramp up the scale of its missile strikes on targets in Kiev in retaliation.

The Spokesperson also noted that precision Kalibr cruise missiles struck a Kiev military facility overnight. Moreover, Russia's attack on the Vizar Zhulyany machine-building plant destroyed workshops for the production and repair of long-range and medium-range anti-aircraft missile systems, in addition to anti-ship missiles.

"The number and scale of missile strikes against targets in Kiev will increase in response to the commission by the Kiev nationalist regime of any attacks of a terrorist nature or sabotage on the Russian territory," Konashenkov told reporters.

On Thursday, the head of the radiation, chemical, and biological defense of the Russian Armed Forces, Igor Kirillov, said that documents show Ukrainian specialists have been working on creating delivery vehicles for weapons of mass destruction (WMD).

Kirillov noted that the Science and Technology Center in Ukraine (STCU) had given grants for research that would benefit the Pentagon, including the field of biological weapons. Its sponsors from the United States are the Defense Department and the State Department, and it was funded by the US Environmental Protection Agency and US departments of agriculture, health, and energy. Kirillov cited a document that the STCU curators prepared on March 11, 2022.