UNITED NATIONS, October 28. /TASS/. Washington’s lack of response to Russian requests about US biological labs in Ukraine shows that Russia’s complaints about them are justified, Russia’s Permanent Representative to the United Nations Vasily Nebenzya told the UN Security Council on Thursday.

"There was no substantive response to our repeated requests to the US side for extensive clarifications about this kind of activity," he said. "The US secrecy and lack of response to Russia’s complaints only proves that they are justified.".