President Joe Biden cast a potential Russian invasion of Ukraine in stark historical terms today, saying, “it would be the largest invasion since World War II.” Former U.S. ambassador to NATO Ivo Daalder discusses whether the U.S. has done enough to prepare for a Russian invasion of Ukraine. CNBC’s Ylan Mui reports on frustrated taxpayers who are still waiting for their refunds from last year. Sam Coates of Sky News reports on the U.K. investigation into lockdown parties at Downing Street. CNBC’s Kate Rogers reports on a bake shop in Atlanta that’s had to raise prices to help pay for employees’ health insurance, and the support the owner has received from the community. CNBC’s Valerie Castro reports on a blood shortage in the U.S. that’s hitting crisis levels from coast to coast. CNBC’s Scott Cohn reports that San Jose, California, could become the first city to require gun owners to buy liability insurance. Plus, CNBC’s Meg Tirrell reports on the FDA’s decision to pull antibody treatments for the omicron variant. The agency says the drugs are not effective against the variant.