UPDATE: Yes, we're aware that Yousef is not "squeaky clean." He's made statements that indicate - despite his spying - that he's no fan of Israel, and bemoans the Israeli "occupation." However, none of that detracts from his assessment of Hamas' goals and methods. He can despise Israel all he likes, he's still exposing the truth of how Hamas views its relationship with the rest of the world.
Obviously, by now, you've heard the calls for Israel to stand down in its current conflict with Gaza. Everywhere you turn, Hamas apologists are making the same claim. Israel is barbaric, and needs to end its vicious attacks. Never mind that the rocket attacks are ongoing and, please, ignore the fact that Hamas keeps violating cease-fires. Israel is the alleged problem.