Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Horrible-My last Clancy book.

When I was a teenager, I burned through all of his early books in a few days, completely absorbed in the exciting military battles and intriguing political maneuvering. But it's clear that starting with this book, Clancy has run out of boogiemen. I'm an environmentalist, and although his topic of environmental terrorism didn't insult me, the bumbling, utopian narrative spewed by the disturbed tree-huggers did make me cringe. I remember turning each page, hoping, begging, to find something interesting to grab onto, but in the end it was a giant letdown. He started to lose it somewhere around Debt of Honor, but this is sure proof that he simply ran out of enemies. How much more Robby Jackson talking jive can you take? Or Ding spewing his East L.A. street-slang? The characters and plots are now cliches. Oh well-it was good while it lasted.