The Blue and the White Nile tributaries converge in Sudan's capital Khartoum and from there run north through Egypt to the Mediterranean.
No reason was given for the move, which comes ahead of presidential elections to be held in March.
Strong summer rains saw much of southern Africa recover from a drought brought on by the El Nino weather phenomenon.
Now that many Diasporas have obtained dual citizenship and National IDs, it is critical for political...
The outcome is expected to be messy and inconclusive