The Kurd aren't dumb. They know they'll be betrayed. It's still their best shot. Many of them have been hanging out in the mountains for decades waiting for an opportunity like this. They are going to take it whether the US helps them further or not -- even if they don't they are likely to be blamed and punished as if they had while the regime lashes out. Surely they'll accept pallets the US is about to drop to them.