Cairo, Khartoum fear it will reduce their share of Nile waters Egypt says it will take all necessary measures to protect national security CAIRO: In a letter to the UN Security Council, Egypt has warned of cracks in the concrete facade of the sub-dam linked to the Grand Ethiopian Renaissance Dam. Cairo said this is particularly alarming due to Ethiopia’s failure to comply with its duty to conduct the required environmental and socioeconomic impact studies. The letter, sent to the UNSC president, said Egypt’s Minister of Irrigation and Water Resources Mohamed Abdel-Aty had received a message about Ethiopia’s intention to unilaterally resume filling the GERD during the current rainy season. Abdel-Aty said Ethiopia’s decision comes in the absence of an agreement between it and Egypt and Sudan on the rules governing the filling and operation of the dam, constituting a violation of the 2015 Declaration of Principles signed by the three countries. He stressed that Cairo holds Ethiopia fully responsible for any significant harm that may be caused to Egypt by these repeated violations. Egypt’s Foreign Ministry said the country reserves its right guaranteed in the UN Charter to take all necessary measures to ensure and protect its national security, including against any harm that Ethiopia’s unilateral measures may cause. The GERD has raised tensions between Ethiopia on one hand and Egypt and Sudan on the other. The latter two countries are demanding a legally binding agreement on the filling and operation of the dam, which they fear will reduce their share of the Nile’s waters.