FILE - In this file photo of Tuesday, Jan. 22, 2013, a traditional felucca sailing boat carries a cargo of hay as it transits the Nile river passing the Pyramids of Giza in Cairo, Egypt,  Ethiopia started to divert the flow of the Blue Nile river to construct a giant dam on Tuesday, according to its state media, in a move that could impact the Nile-dependent Egypt. Downstream nations Egypt and Sudan have objected to the construction, saying it violates a colonial-era agreement which reportedly gives Egypt nearly 70 percent of Nile River waters. (AP Photo/Amr Nabil-File)
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