No, I expect that one can only nationalize Western countries businesses.
I keep think back to the 80’s, when Hezbollah kidnapped some Westerners and a Russian.
Seems to me that the KGB kidnapped a Hezbollah leader and returned him in a day or so, but with a message that all men, everywhere, Mafioso or just a simple thug, understand completely.
Hmm, wasn’t this guy Putin a former employee of said Russian government agency?
The Russians cut his testicles off. They never had another problem. So, yes he was returned. Some assembly required.