English: Map showing the location of the Gulf of Aden, located between Yemen and Somalia. Nearby bodies of water include the Indian Ocean, Red Sea, Arabian Sea, and the Bab-el-Mandeb strait. (Photo credit: Wikipedia)
According to this excellent article from the NYT, it seems that the Obama Administration had been involved in the planning of the Gulf States air assault on Yemen. This is a must-read article.
The NYT article gives a detailed description of the current crisis in Yemen, where Iran is sponsoring the rebels – the rebels seem to be winning in overrunning the legitimate government in Yemen which is supported by both the US and Saudi.