“This is exactly the kind of false flag effort we have warned Russia might initiate to justify a biological or chemical weapons attack,” Olivia Dalton, spokesperson for the US Mission to the United Nations, said late Thursday. “We’re not going to let Russia gaslight the world or use the UN Security Council as a venue for promoting their disinformation.” The Russian request, announced in a tweet Thursday afternoon from its first deputy UN ambassador, Dmitry Polyansky, follows the US rejection of Russian accusations that Ukraine is running chemical and biological labs with US support.