The front line with Russia has moved east. It makes sense for American forces to follow.
http://www.kasparov.ru/material.php?id=5B0E4D75F303D
https://ru.krymr.com/a/29259756.html
https://ru.krymr.com/a/29259313.html
https://newtimes.ru/articles/detail/165621
https://republic.ru/posts/91036