Hitler had rockets, sending many to the UK, developing something more destructive to put in them. He was years ahead with his war tools.
But, my point was you cannot deal with an aggressive tyrant unless they realise they are stuffed, I reckon Putin is now realising he is near stuffed.
Inviting N.Korea, what a joke, plus, if provoked, the West could unleash the death knell using conventional weapons on Putin.........
You do not give in to tyrants...........