Egypt, Ethiopia agree to settle differences over Nile mega-dam

Egyptian President Abdel Fattah al-Sisi (R) shakes hands with Ethiopian Prime Minister Abiy Ahmed at the Ittihadiya presidential palace in Cairo, Egypt, June 10, 2018. in this handout picture courtesy of the Egyptian Presidency. The Egyptian Presidency/Handout via REUTERS

CAIRO (Reuters) - The leaders of Ethiopia and Egypt vowed on Sunday to iron out their differences over a dam Addis Ababa is building on the Nile River that Cairo fears threatens its water supplies.

Talks over the Grand Renaissance Dam, Ethiopia's $4 billion hydroelectric project, have been deadlocked for months. But at a press conferee in Cairo, Ethiopian Prime Minister Abiy Ahmed and Egyptian President Abdel Fattah al-Sisi signalled they had made a breakthrough.