biden's statement regarding yemen today seems to be very narrowly focused, and unlikely to stop the actual war there, although it may lead to less civilian deaths.
there's two components to the war in yemen. the first is essentially an attempt at genocide against the yemeni people, which components in the saudi theocracy seem to want to wipe off the face of the earth. the second is a struggle against islamist militants, who are using the region as a base - although the second component, as tends to be the case with these things, is shrouded in confusing contradictions.
the correct interpretation is that they seem to think the idea of bombing civilians is a poor strategy, much as obama argued that iraq was a strategic mistake - and that the resources should have been deployed to afghanistan, instead. they'd rather use those resources on something more relevant - that's what they're saying.
where those resources end up redeployed is not entirely clear, but i'd expect this government to pick up where obama left off in shifting it's focus towards africa. they may also be shifted towards iran.
so, i mean, if you're concerned about what is really an open program of genocide by the saudi government in the region, this is a minor step in refocusing the conflict, at least. and, expect the usual voices to exaggerate it. but, don't get too excited - it's not what you think, it's a rebalancing of forces designed to reproject force towards regions where conflict is of greater direct benefit to the empire.
and, from that standpoint, from the logic and perspective of empire, it's hard to disagree with it; it is a stupid waste of resources.