....who have blocked/seized/taxed aid shipments plus spread IED's and mines everywhere they go making getting aid through tough. The US could sell zero bombs to Saudi and it wouldn't change a thing, they would just drop Chinese or Russian bombs on the rebels. It might make you feel better but no less bombs would be dropped. Iran not supporting the rebels would be the biggest help to ending this. And it is unrealistic to expect Saudi to back off when the rebels have fired hundreds of IRBM/Scuds into Saudi, all smuggled into Yemen from Iran.

The US should not support the Saudi war against Yemen. And I hope this is an important policy discussion in the Democratic presidential primary.

....government of Yemen fight off a Iranian funded rebellion.

As for characterizations, one could also say that the Russians helped the elected government of Syria fight off a Saudi-funded rebellion.

Regardless of characterization of the Yemen situation, I don’t think the US should support the military operation in which the Saudis are engaged.

...at least now we can suggest ways to limit civilian casualties and they might listen, the Russians and Chinese could not care less what they use them for.

And the government of Yemen WAS elected, the Syrian one not so much.

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and more to do with the need to block ports to block weapons imports.

Ports are dual use, of course.

But blaming the Yemenis for the famine is so much less satisfying than saying, "No, WE are to blame. Well, when I say 'we' I don't really mean us, I mean my domestic political foes. But I don't get people's attention and claim moral authority, now, do I, when I say 'they are to blame' because, really, that's not much better than saying its the Yemenis to blame for the civil war that actually produces the famine, inn't it?" But now I'm beginning to sound like Holly from Red Dwarf, babbling on and on, aren't I?

At some point I even mentally slipped into her lower-class British accent.

Either stop the rebels and end the war on the side of the Sa'udi's allies, or back the rebels and end the war with victory for Iran's allies. Either way, it's the war, and either way we're backing either the Sa'udi or the Iranian theocracy.