Russia could have killed this man years ago when he was in their custody, they instead used him for a spy swap and even then took years before deciding to kill

Russia could have killed this man years ago when he was in their custody, they instead used him for a spy swap and even then took years before deciding to kill him. There are one of two things going on, Russia is trying to be a nusiance in the same way by flying jets near Britain's airspace. It can't go to full scale war because both are nuclear powers, but wants to show people not to mess with it. The way MI5 works is completely different, something will happen in Russia and no one will know it's them that retaliated. I'm surprised people haven't capitalised on grilling Corbyn on if he thinks nuclear disarmament is still a good idea.