Even so, it does seem to be a potential "weak spot" in Homeland Security. I wonder if anyone is checking out the ports of call regardless of whether something happened there or not. Terrorist cells are in Indonesia and the Phillipines, which means that they are comfortable in a tropical island environment.
At the airports, they post travel advisories on the security troubled airports around the world. Perhaps it's time to do similar things for cruise ports-of-call?
-PJ