Here is a good article about the nature of Pakistan, and the US’s relationship and history with them:
From Abbottabad to Worse | Politics | Vanity Fair
Intro:
Hating the United States—which funds Islamabad’s army and nuclear program to the humiliating tune of $3 billion a year—Pakistan takes its twisted, cowardly revenge by harboring the likes of the late Osama bin Laden. But the hypocrisy is mutual, and the shame should be shared.