No indication of imminent Russian chemical weapons attack in Ukraine -U.S. defense official

A Ukrainian service member inspects a shell crater, as the Russian invasion continues, in a village on the front line in the east Kyiv region, Ukraine March 21, 2022. REUTERS/Gleb Garanich

WASHINGTON (Reuters) -The United States has not yet seen any concrete indications of an imminent Russian chemical or biological weapons attack in Ukraine but is closely monitoring streams of intelligence for them, a senior U.S. defense official said on Tuesday.

President Joe Biden said on Monday, without providing evidence, that Russia's false accusations that Kyiv has biological and chemical weapons illustrated that Russian President Vladimir Putin is considering using them himself in the war against Ukraine.