The regional tensions are all the more reason why Ethiopia won't be apart of this new mission since they are the ones causing it. What sense is there to allow Ethiopia to stay when they made their aggressive stance against Somalia clear? The U.S. ambassador can yap all he wants, America knows a shift in strategy against Al-Shabab is needed as such that will require Ethiopia getting the boot.
Give up this sorry act. Egypt is already involved via them sending weapons to Somalia, with many more on the way. Egypt is also the single most important African ally of the west and has proven itself capable of defeating militants as seen with their successful campaign against the Sinai insurgency. Ethiopia by comparison has no track record of weakening Al-Shabab or defeating them at all in Somalia.
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Again refer back to the comments of the US, regional tensions should not intefere. If Somalians are upset with Ethiopia that's thier issue and they should just accept what's going on. Somaliland is going one way or another so no reason to point the finger at Ethiopia for recognizing the inevitable.
This week we've heard positive statements from the US state department and military leaders about Ethiopia's involvement in Somalia. Time for Somalians to grow up and recongize that beggars can't be choosers.