http://www.amazon.com/Son-Hamas-Gripping-Political-Unthinkable/dp/1414333072 Was written by the son of the senior hamas leader, who turned an Israeli spy. He's now a Christian and lives in america. If you do get it, you'll be confirming everything you've learned in the firs half of the book. However, once you get to the second you'll be amazed at what you see.
http://www.amazon.com/Suicide-Terror-Understanding-Confronting-Threat/dp/0470087293 This book is kinda pricey, but it's the best honest, no holds bar factual book about the conflict. And how Israel was essentially forced into acting on several occasions because of the suicide bombers. If you're near a university you should pick it up for free from their library. Start on chapter 3.