U.S.-Iran escalating threats

Iran threatens retaliation if the U.S. attacks its power plants. Tehran warns it may completely block the Strait of Hormuz and do irreversible damage to critical infrastructure in the Middle East. Iran launches missiles into Tel Aviv a day after dozens were wounded in southern Israel. And Chinese Premier Li Qiang gives the opening address at the China development forum. Dozens of global business leaders are gathered in Beijing to learn about new investment opportunities.