One word. Bush.  

One word not enough? Excerpt (from Kristof’s “The Endorsement from Hell” for the NY Times:

…Yet the endorsement of Mr. McCain by a Qaeda-affiliated Web site isn’t a surprise to security specialists.Richard Clarke, the former White House counterterrorism director, and Joseph Nye, the former chairman of the National Intelligence Council, have both suggested that Al Qaeda prefers Mr. McCain and might even try to use terror attacks in the coming days to tip the election to him.

“From their perspective, a continuation of Bush policies is best for recruiting,” said Professor Nye, adding that Mr. McCain is far more likely to continue those policies.

An American president who keeps troops in Iraq indefinitely, fulminates about Islamic terrorism, inclines toward military solutions and antagonizes other nations is an excellent recruiting tool. In contrast, an African-American president with a Muslim grandfather and a penchant for building bridges rather than blowing them up would give Al Qaeda recruiters fits…for more, click here.