International shipping lines are being forced to scale back or suspend port calls to Yemen as the conflict gets worse, putting pressure on supplies of food as prices rise in local markets. Yemen imports more than 90 percent of its food, including most of its wheat and all its rice, to feed a population of 25 million. Much of its needs had been serviced by foreign ships. Saudi Arabia and Arab allies have launched air strikes against the Iran-allied Houthi movement, which has taken most of the country and forced President Abd-Rabbu Mansour Hadi to flee to Riyadh. The coalition has deployed naval vessels to intercept ships carrying arms to the rebels, although merchant ships are meant to have free passage. Most ports appear to be under Houthi control or are disputed by combatants. Many shipping companies are now unwilling to risk their vessels, industry sources […]