Ethiopia

Both the government in Addis Ababa and armed Tigrayan independence fighters have their supporters, from as near as next door to as far away as Tel Aviv

The US wants to revive talks on Ethiopia's Nile dam, but another strategic contest between Addis Ababa and Cairo has emerged in the Red Sea, which could complicate reconciliation efforts

For Addis Ababa, using Djibouti's port for trade is not enough; it wants its own sovereign access to international waters. However, this first needs the consent of suspicious neighbours.

Cairo hopes that by helping the Americans establish relations with Egyptian allies in the region, it will be better placed to deal with the threats posed by Addis Ababa

The regional rivals aren't just fighting over freshwater supplies. Cairo sees Addis Ababa's bid for Red Sea access as part of a wider fragmentation strategy.

Is Washington's intention genuine, or an attempt to slam the brakes on Cairo's growing assertiveness in Horn of Africa politics and debilitate its hard-won leverage?

Addis Ababa has finally inaugurated the long-awaited and much-touted GERD—Africa's biggest dam—leaving Egypt and Sudan worried about the impact on their water supply downstream

As Addis Ababa stands to benefit from electricity and revenues, it reassures downstream nations that the $4bn river barrier is an opportunity, not a threat. That's not the view from Cairo.

A deal to give Ethiopia commercial Red Sea access in return for its recognition of Somali territorial integrity has been brokered by Ankara to much acclaim. Where does that leave Egypt?

Tension in the Horn of Africa is not new, but the rivalry between Cairo and Addis Ababa has escalated, as Ethiopia forges ahead with projects that threaten Egypt's national security