"United States trade restrictions and economic sanction laws prohibit Blizzard from doing business with residents of certain nations, including Iran," the company said in an email sent to players last week and forwarded to The Associated Press late on Tuesday.
"Blizzard tightened up its procedures to ensure compliance with these laws, and players connecting from the affected nations are restricted from access to Blizzard games and services."
That's pretty random.... I wonder how Xbox Live works in that regard. Any Iranians out their playing Halo? What about Cuba? Can Cubans play Gears of War?