U.S. President Barack Obama (2nd L of the group under wing) talks with Ethiopian Airlines CEO Tewolde Gebremariam (L in group) and Ethiopia's Prime Minister Hailemariam Desalegn (2nd R in group) after viewing a Boeing 787 Dreamliner from Ethiopian Airlines at Bole International Airport before departing Addis Ababa, Ethiopia July 28, 2015. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY