Pakistan: friend or foe?

I wish you to understand the following news item as diagnostic: the Pakistan gov't arrested several snitches who were implicated in the recent take-down of Osama bin Laden. They were accused of cooperating with the CIA.

C'mon: would this have happened if Pakistan were on the side of Obama/Clinton/Gates/US? This very same country signed a peace treaty with the Taliban. This country's equivalent of the CIA, the ISI, is an ally of the Taliban.

So, here is my question: which country is a greater danger to our country: Pakistan, or Iran?