The US using Blackwater recruited mercenaries from around the world to fight in Iraq and Afghanistan. Suspect the Wagner group on behalf of Russia is hiring some of the same guys to fight in Ukraine.
I doubt it. Blackwater had standards. Wagner just takes any warm body for fodder.
Black water might do its but they expect it be paid up front with a western letter of credit in Switzerland backing future payments.
In other words, Russia can’t afford them.