I just called to say I love you

You've seen the dribs and drabs coming out in the various media, but this letter from Al Qaeda #2 Ayman al-Zawahiri to Iraq Theater Field Marshal Abu Musab Zarqawi is definitely worth reading in its entirety. Know your enemy and all that. Here's a link to the transcription. I will try to blabber on this as well. But quickly, in reading this letter, how can we not see the importance of success in Iraq?