AP via Yahoo!:

An old dispute got a new airing this week, when the Iranian president and the emir of Qatar got into it over the name of the body of water that separates Iran from the Arabian peninsula.

Geographers have traditionally called it the Persian Gulf — after ancient Persia which is now called Iran. The Arabs would prefer to call it the Arabian Gulf.

John at OPFOR comments, "I, for one, support dubbing the gulf whichever name pisses off the Iranians the most."