Aden is besieged by street fighting as Houthis continue trying to take the city.

If not for the Saudi intervention, the Houthis might well have won this war already with much less violence. But now the fighting is likely to drag on indefinitely, with no winner but many losers. It could end up like Iraq, with a cycle of massacres back and forth.

Even if it does not reach that point, it will be another failed state in which al Qa'ida will have every opportunity. I have to wonder, is the US making sure its favorite bogey man remains threatening? Is the US being macchiavellian, or idiotically incompetent?