The official told reporters en route to the United Arab Emirates that a coalition of nations would provide both material and financial contributions to the "Sentinel" program, but did not name the countries.
"It's about proactive deterrence, because the Iranians just want to go out and do what they want to do and say hey we didn't do it. We know what they've done," he said, adding that the deterrents would include cameras, binoculars and ships.