WASHINGTON, March 12. /TASS/. The US sees no specific signs that Russia could use chemical weapons in Ukraine, Pentagon Press Secretary John Kirby said at a regular news conference on Friday.

"I don't have any specific indication now to talk about, but it is something we're concerned about," he said in comments on Western reports that Russia could be planning to use chemical weapons during its special operation in Ukraine. "I don't have anything to report with respect to specific Russian chem-bio capabilities inside Ukraine."

Speaking about nuclear weapons, Kirby said Russia didn’t create any new threats to the US. "I would just tell you that we've seen nothing that gives us a cause or reason to change our deterrent posture at this time," he said.

Russian Ambassador to the US Anatoly Antonov on Wednesday said some statements by US officials "testify to the serious concern at the White House about the disclosure of the truth about the US-funded work on the military biological program near the Russian Federation borders.".