No, because cold wallets are stored in a physical location without software interaction. They'd have to do what essentially amounts to a terrorist attack in ord

No, because cold wallets are stored in a physical location without software interaction. They'd have to do what essentially amounts to a terrorist attack in order to break into that location, subdue all the guards, steal all the wallets, etc. Which would basically be a declaration of war if it could be linked back to a specific country.