The tanker war shows the ability of a relatively low-tech force to cause significant (and costly) grief to more capable, better equipped adversary. Iran has a great position to be able to employ a small force against a number of strategic choke points. Great set of articles, thanks for posting.
I've been known to do crazy stuff, but I would never go to sea or submerge in an Iranian copy of a North Korean submarine.
The Underwater Menace