Let me go back to my first statement and ask: who let ISIS in, but the Kurds? It's the same thing. Would the trust have been lost since the second round happened? That's my personal belief. As well, Yazidis believe in general that we can't trust them ever again. There was a route that was going to be opened by the YPG, which is the Kurdish fighters who are fighting alongside the Yazidis. They wanted to open this route back up for the supplies to get to the mountain, food and such, and they refused to do so.
On December 2nd, 2014. See this statement in context.