If I was a US intelligence agency I would specifically establish colocation presences with ISPs in Russia, Belarus, Uzbekistan, china, etc, on commercial ISP terms, and admin the servers remotely to set them up as a commercial vpn service. There's plenty of datacenter operators in Russia that will take your money.
Presumably the feds wouldn't say who they were and would pose as common criminals, because they wouldn't have any reason to suppose that the datacenter operator would keep quiet if they were open about their identity.