Iran could trigger a global terrorist campaign and choke the West's oil supplies in the event of war with America, the top US commander in the region has warned.

In a rare public discussion of how a war with Iran might unfold, Gen John Abizaid, the chief of the US Central Command, gave a sobering assessment of Iran's military potential.

He warned that in a war Iran would rely on unconventional means to challenge America's superiority.

"Number one, they have naval capacity to temporarily block the Straits of Hormuz [the entrance into the Gulf] and interfere with global commerce if they should choose to do so," he said.

"Number two, they've got a substantial missile force that can do a lot of damage to our friends and partners in the region.

Trinity, did you notice that Mel Gibson made statements about the loss of life in this war that is unjust.