Some good news:
An American friend of mine has a Russian friend, a teacher, who was reluctant to leave Russia, as his family is there. His Russian passport allows for limited travel to only a few countries. My friend convinced him to make the leap and met him in Brazil, where the consulate has been very cooperative. He had to be revaxxed, as his Sputnik vaccines are not accepted in the US, and now must go through a waiting period. But it appears he'll obtain a US visa. The war in Ukraine has made life in Russia unbearable for so many Russians, even for many who would have stayed. A brain drain, indeed.