This is a harrowing book written by a man who has briefed Congress on the effects that an EMP (Electromagnetic Pulse) would set in motion.
Electromagnetic Pulses can be natural (produced by extreme solar storms, etc) or man-made (terrorist attack) and have the potential to knock out all electronics over the world. This is not alarmist propaganda: they really can do this, and are ironically more likely than many smaller threats (natural & man-made) we currently prepare for.
I use the term "set in motion" above with purpose. Almost all of the destruction an EMP would produce would cascade down as a result of terrestrial electronics being destroyed. I am a trained environmental & systems engineer, and I think the author did a great job of detailing much of what could happen, & why.
Let's chat & see if we're prepared for this. Regardless of your politics, I feel that this is a worthwhile read.
Please comment if you have a preferred date/place.
(PS- I've already read the book. It took me all of 2 days- couldn't put it down!)