Iranians fear an even more painful squeeze on living costs after additional U.S. sanctions take effect on Monday, from businesses struggling to buy raw materials to the sick and elderly unable to afford life-saving medicines. Iran’s clerical rulers have played down the U.S. move, but many ordinary Iranians appear apprehensive. “All the prices are going higher every day ... I cannot imagine what will happen after 13 Aban (Nov. 4). I am scared. I am worried. I am desperate,” said elementary school teacher Pejman Sarafnejad, 43, a father of three in Tehran. “I cannot even buy rice to feed my...