Want to read more stories like this? POLITICO Weekend delivers gripping reads, smart analysis and a bit of high-minded fun every Friday. Sign up for the newsletter. The administration is of course right that Wagner is engaged in a range of criminal enterprises. There is speculation that its costly siege of the Ukrainian city of Bakhmut is motivated by a desire to control salt and gypsum mines in the area. It has also embraced far-right extremism, with links to a white supremacist organization — the Russian Imperial Movement (RIM) — that the U.S. already designates as a terrorist group. But...