The U.S. military is considering putting armed personnel on commercial ships traveling through the Strait of Hormuz, in what would be an unheard of action aimed at stopping Iran from seizing and harassing civilian vessels. That's what five American officials told The Associated Press on Thursday. If implemented, it would be an extraordinary step by the Pentagon as it grapples with a renewed effort by Iran to harass and seize ships traveling in the strait, through which 20% of all the world’s crude oil passes. Iran’s mission to the United Nations did not immediately respond to a request for comment from the AP about the U.S. proposal.