If you want to learn more about the US role in promoting Fatah-Hamas warfare,
check out Tony Karon. Deliberately initiating a proxy war and then having your proxy lose is really just incredibly shoddy. I've said before that we should hope for a Democratic Party that puts something better on the table than superior implementation of a Bush-esque worldview, but it really would be nice to see some better implementation.
This article available online at:
http://www.theatlantic.com/politics/archive/2007/06/made-in-the-usa/42702/