Regarding to Ethiopia፡ if America do that, the time will come for Ethiopia to rise and revive spiritually and materialistically.
First of all whether they bomb Ethiopia or not, nothing will come for change. But Ethiopia's confidence will rise exponentially.
Actually America and its ally scared Ethiopia especially Amhara. This is very clear and I believe that everybody is sensing this.
Aid is one type of method to put someone or country to be remain under development. If the aid that are supposed to be intended to Ethiopia ceased for some reason, this could be a blessing for Ethiopia. Aid will take away pride and will also curb the willingness to be industrious.
Ethiopia is a different country and the situation that successfully accomplished in Syria, Yemen, Libya, Iraq ... will not work in Ethiopia. It will have a backfire. America's demise will not far.
Regarding Eritrea: actually Eritrea was isolated for long period of time and its significance is more or less null.
This is for America: No body give shiiiit about it.