Sources: the US and UK are reviewing $20B+ in Tether transactions through Moscow-based crypto exchange Garantex, as part of a crackdown on sanctions evasions (Bloomberg)
https://www.bloomberg.com/news/articles/2024-03-28/crypto-transfers-to-russian-exchange-worth-20-billion-probed-by-us-uk
http://www.techmeme.com/240328/p21#a240328p21