I was sent these articles and thought I'd pass them along......I'm by no means suggesting that Paul Whelan should be left behind in Russia but he was drummed out of the Marines, held multiple passports from different countries and was not what you'd really call a model U.S. citizen.
https://en.wikipedia.org/wiki/Paul_Whelan_(security_director)
https://www.reuters.com/world/paul-whelan-ex-us-marine-jailed-russia-spying-charges-2022-12-08/
https://en.wikipedia.org/wiki/Paul_Whelan_(security_director)
https://www.reuters.com/world/paul-whelan-ex-us-marine-jailed-russia-spying-charges-2022-12-08/