Written by someone who knows what they are talking about (General Sir Richard Shirreff was Deputy Supreme Commander Europe for NATO) it’s a Tom Clancy type novel.
The action starts in Ukraine with the kidnapping of US trainers by Russian special forces and attacks on US jets by Russian fighters but soon moves to the Baltics demonstrating the high risks faced by these countries.
NATO is seen as largely ineffectual initially as its members have continually cut back on defence budgets or not contributed their agreed share to it.
However due respect is paid to the resistance movements in the Baltics referred to as the Forest Brothers
Without spoiling the plot for readers this book is bang up-to-date (it even has Jeremy Corbyn as the leader of the opposition in the UK) but will make uncomfortable reading.