Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Ethiopia Fuels Regional Tensions with Next Phase of Blue Nile River Mega-Dam Salem Solomon WASHINGTON - After Ethiopia acknowledged this week it has begun to fill the reservoir at its massive dam on the Blue Nile River, observers worry that neighboring countries may feel they are running out of options to respond to a long-planned energy project that could endanger their access to fresh water. Mirette Mabrouk, a senior fellow and director of the Middle East Institute's Egypt Studies Program, told VOA that news about the Grand Ethiopian Renaissance Dam (GERD) being filled could ratchet up tensions between Egypt, Sudan and Ethiopia. She believes military aggression is "option Z" in a long list of strategic moves, but remains possible. .