The Nile is God's gift to Ethiopia. Ethiopia has the obligation to harness The Nile River to benefit it's own population. No other country should set any limitations to the use of the River Nile to Ethiopia.
Ethiopia is already late and has wasted many opportunities in harnessing the Nile. This could have brought many African countries, including Ethiopia out of poverty has the Nile been harnessed some 50 years ago.
It is stupid for Egypt to set conditions on Ethiopia's plans to harness the River Nile. No force on Earth has a right to set limits to the use of a river that belongs to another country. Britain was experimenting when it colonized Egypt and set limits to the use of the waters of the Nile. Ethiopia was not aware of such plans by Britain. If Britain was still a colonial power over Egypt, Ethiopia would fight against Britain.
Egypt should rather work with Ethiopia. Otherwise Egypt will be destroyed by Ethiopia.