White House Press Secretary Jen Psaki, dismissed Russia’s claims that the U.S. has chemical and biological weapons labs in Ukraine. Ms. Paski tweeted that these claims are “preposterous” and warned that Russia might be preparing the ground for using such weapons in Ukraine or that it may be setting up a false flag operation using these banned methods of warfare. “This is preposterous. It’s the kind of disinformation operation we’ve seen repeatedly from the Russians over the years in Ukraine and in other countries, which have been debunked, and an example of the types of false pretexts we have been warning the Russians would invent,” Ms. Psaki said. She added that U.S. was in compliance with the Chemical Weapons Convention and Biological Weapons Convention and not developing or in possession of these weapons anywhere. Rather, Russia has a track record of using chemical weapons in poisoning and attempting to assassinate Russian President Vladimir Putin’s political enemies. She cited the example of Russian dissident leader Alexey Navalny, who was, as per German lab tests, exposed to a nerve agent — a result of an alleged assassination attempt by Mr. Putin. “It’s Russia that continues to support the Assad regime in Syria, which has repeatedly used chemical weapons. It’s Russia that has long maintained a biological weapons program in violation of international law,” Ms. Psaki wrote. “Now that Russia has made these false claims, and China has seemingly endorsed this propaganda, we should all be on the lookout for Russia to possibly use chemical or biological weapons in Ukraine, or to create a false flag operation using them. It’s a clear pattern,” Ms. Psaki said. This is the second forewarning by the U.S. about Ukraine. First being President Joe Biden’s surety about Russia’s attack on Ukraine, days before Russia began its assault of Ukraine on February 24.