The following makes better sense given my perception of Zarqawi's capabilities at the moment.
The United States has intercepted a message believed to be from fugitive al-Qaida leader Osama bin Laden to Abu Musab al-Zarqawi, instructing the leader of the Iraqi insurgency to expand his operations and begin attacking U.S. targets outside Iraq, intelligence officials told NBC News on Monday.
http://www.msnbc.msn.com/id/7047304/
I would anticipate a regional attack of some sort, quite possibly Europe.