Re: The problem is, the choice "nobody controls the seas" isn't available.
The goal of the US would be to create as much of a puppet government as possible. A very good guess is that the US will soon see that Yemen acquires US military equipment, making the Yemenis dependent upon America for parts for a long, long time.
Leaders of threatened governments become addicted to arms.
The UN would seek to help Yemen create a unified government without foreign influences. Not at all the US goal.