According to Blizzard in a post, “United States trade restrictions and economic sanction laws prohibit Blizzard from doing business with residents of certain nations, including Iran. Several of you have seen and cited the text in the Terms of Use which relates to these government-imposed sanctions.
“This week, 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.
“This also prevents us from providing any refunds, credits, transfers, or other service options to accounts in these countries.”
Other games which have been knocked offline include Guild Wars, RuneScape, Second Life, Dofus, Evony and Entropia Universe.
Stay tuned.