Critics seem to be getting hung up on the realism of the set up for this series. Is it realistic that Russia would undertake a 'soft' invasion of a small European country after critical energy production was stopped in response to climate change, and would NATO sit back and allow it to happen on their doorstep? Probably not, but that's not what this brilliant political thriller is really about. If a more powerful country invaded YOUR country, would you resist, would you keep your head down and try to 'get along' with the invaders if they kept promising to leave but didn't, what compromises would you make to try to avoid a full blown military invasion and loss of life. At what point would you decide that 'enough's enough'? When you see someone openly shot in the street by the occupiers? When free press is shut down? Vichy France, Russia's recent forays into the Ukraine and Hong Kong being handed back to China, all spring to mind. Viewers need to get over the likelihood or otherwise of the basic premise of this series, and just enjoy a really well written, well acted mini series that keeps you in a state of nervous suspense. One that makes you think about history, current world events and future possibilities. How far would you allow yourself to be pushed around before you decided to push back?