Iran has threatened to block flow of cargo through Strait of Hormuz if U.S. sanctions its ports . U.S. officials has warned that disruption in traffic will not be tolerated . Vali Nasr says the sanctions designed to prevent war could end up causing it . He says the first casualty in a war could be the Iranian economy .
Iran has threatened to block flow of oil through Strait of Hormuz if U.S. sanctions its oil . U.S. Navy has warned that disruption in traffic will not be tolerated . Vali Nasr says the sanctions designed to prevent war could wind up causing it . He says the first casualty in a battle could be the world economy .