The U.S. Export-Import Bank said it will back bonds issued by Ethiopian Airlines of Addis Ababa to finance the export of four of 10 Boeing 787 Dreamliner aircraft to Ethiopia. Ethiopian Airlines obtained competitive interest rates on its bonds, the bank said. Ex-Im Bank authorized the final commitment for the purchase of the B787s in May, and Boeing delivered the first aircraft to Ethiopian Airlines at Washington Dulles International Airport on Aug. 15. Nippon Export ...