The Saudi Coalition (mainly Saudi, UAE, and Egypt; with American intel, aerial refueling and naval blockade) is winning, against the Shiite Houthi rebels (who got Iranian support) and their allies who support the old President Saleh (a Northerner). The Saudis have effectively liberated what used to be the old country of South Yemen. Now they are moving on to take North Yemen and the capital - The Saudis have it roughly encircled from about 100-200 miles out.
The Government in exile, led by elected President Hadi (a Southerner), remains in Saudi Arabia, and there is a vacuum in governance developing in liberated areas, which al Queada in the Arabian Peninsula (AQAP) is moving into. Al Queada has long ties to the Saudi Gov, and there may have been some coordination in attacking Shiite targets, which both hate. ISIS also is participating in attacks against Shiites.
The humanitarian situation has grown to crisis levels according to the UN, and the Red Cross is being driven out by terrorist attacks.
It looks to me that the Houthis will either be driven to negotiate a settlement reinstating the Saudi-supported President Hadi, or they will be militarily defeated in a destructive campaign with high civilian losses. The Saudis heavily outgun the Houthis, but they will be fighting in the Houthi heartland, with a majority Shiite population.
Yemen is at risk of becoming a failed state, as the old North/South divide is inflamed, militias and terrorist groups grow in influence, and no political leader has strong popular support.
Once again, America’s “allies” are on the same side as al-Qaeda. The Obama administration is fully on board with this.
Just like in Syria, our gov. is attacking the only people who fight al-Qaeda and ISIS and supporting the people who cooperate with them.
The rest of the world is well aware of this and judges accordingly.