US Department of Defense spokesman John Kirby. File photoWASHINGTON, May 20.The Pentagon sees no sign of combat lasers being used in the military operations in Ukraine, US Department of Defense spokesman John Kirby said. Ukraine,» he told reporters. Russian Deputy Prime Minister Yury Borisov said earlier that the Russian military is using a new generation of Zadira combat laser systems in Ukraine. jpg» />The Pentagon takes into account the risks of escalation when allocating new military assistance to Kyiv