How Iran would retaliate if it comes to war

"Iran's supreme religious leader Ayatollah Sayyed Ali Khamenei also warned of far-reaching revenge in 2006. "The Americans should know that if they assault Iran, their interests will be harmed anywhere in the world that is possible," he said. "The Iranian nation will respond to any blow with double the intensity.""

I'd listen to the Iranians if I were the Americans. Somehow, I don't get the impression these guys are bluffing. If attacked, the Iranians will do what every other country with means would do - they will retaliate by any and all means at their disposal.