Even Turkey and Egypt could bomb it directly themselves due to the defence pacts with Somalia since this would be an invasion. Or they could do it and Somalia could claim it.
Why do you think Ethiopia is losing it?
They are just doing politics with it according to one Arab commentator:
Ethiopia had not previously paid attention to the security or defence agreements signed by Egypt with the surrounding countries, South Sudan, Kenya, Uganda and Burundi. Its reactions were quite subdued. Ethiopia’s response this time was however strident. The Ethiopians’ anger seemed in part contrived. While the Somalis can understand easily that Cairo is not serious about its presence in the Horn of Africa, the Ethiopians can also look at the minutes of their negotiations with the Egyptians over the Renaissance Dam. They would be able to see how the Egyptians hinted at escalation while their state media even started talking about imminent revenge against Addis Ababa for operating the dam without Cairo’s prior agreement. These media warned that Egypt would not stand idly by while the Nile flow receded. Sources close to the authorities went as far as to talk about preparations for air strikes and sabotage operations targeting the dam, which were supposed to be carried out by Egyptian special forces. Then, nothing happened. There was total silence. Without looking back at these issues, Ethiopians can see how Egypt’s “interventions” in eastern Libya and Sudan, and most importantly in Gaza, have faltered even after initially speaking with a loud voice.
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No one came to Somalia's defence when the MoU was signed. Somalia went around the world to find someone and the Egyptians thought they could do something with the situation, but they didn't come running to Somalia, you went to them and that should tell you they aren't very interested.