Genocides are always wrong. That's the moral supremacy communist propaganda inculcates. The yeminis are muslilms too and as full of hate as the saudis. They want the war and they chose it, Humanity will not be controlled by what you like or dislike. Condensing it down to you simple idea of "my high morals are offended" will change when you're being genocided and nobody gives a fuck. You should have been focusing on your own perilous position only. If you believe altruism is universal, you are wrong.