I can't summarize it as neatly as booklist, so I shall use their (no doubt copyrighted) words.
"Peters unveils the possibility of a terrifying future in his latest thriller. Following the wars in Iraq and Afghanistan, the rest of the world becomes embroiled in battle. Los Angeles doesn't exist anymore after a nuclear blast, and most of Europe and Israel are also wiped off the map. How will the remains of the U.S. react to this new and horrible landscape? The scenario that unfolds demonstrates both a paranoid and all-too-plausible possibility. Peters doesn't take the time to explain how all the cataclysmic events transpired. Instead, he drops the reader directly into the battle for the remains of the planet, with weapons firing and limbs flying. The result is an extremely brutal and bloody novel. The introduction, set after the war, takes away some of the narrative's suspense, though the reader is never quite sure at what point the story will end. Military-fiction fans who don't mind Armageddon-style bleakness and massive carnage will find plenty to sink their teeth into here.--Ayers, Jeff Copyright 2009 Booklist "