PrinciplesConsidering the first filling and testing of the GERD as parts of the construction, Ethiopia has said that it will start filling the dam with or without an agreement. But, even assuming for the sake of argument that is valid, Ethiopia can still legally fill the dam without an agreement. The DoP states only that the three countries will use studies to agree on the first filling and annual operation of the dam. As demonstrated below, there is no international law prohibiting Ethiopia from filling the GERD without an agreement. As noted, under international law, Ethiopia is required to undertake a transboundary impact study and notify the outcome to Sudan and Egypt.
Source: Ethiopian News March 30, 2020 16:30 UTC