From the "Bin Laden" Letter:

"The creation and continuation of Israel is one of the greatest crimes, and you are the leaders of its criminals. And of course there is no need to explain and prove the degree of American support for Israel. The creation of Israel is a crime which must be erased. Each and every person whose hands have become polluted in the contribution towards this crime must pay its*price, and pay for it heavily."

Now if that fairly reflects current Al-Qaeda thinking - nothing short of the erradication of the state of Israel will satisfy them. Later on in their letter they even castigate Arab regimes who are prepared to acknowledge the right of Israel to exist as a sovereign state, and declares them enemies.

Any real dialogue with these guys, who have attacked you and continue to plan attacks against you irrespective of your actions and intentions, seems well nigh impossible.