I present this as an open question. Going forward, there is no doubt that all of the 13 demands will be rejected by Qatar. Kuwait appears to be the negotiator in this crisis. I suspect Oman will play a role.
It may be premature to even think how the crisis can be de-escalated. Perhaps, what should be addressed is how any further measures by Saudi Arabia and allies to economically harm Qatar be avoided.
The US, UK and the Economic Union can all condemn the blockade on the basis of free trade. They can also condemn the list of demands as an affront to national sovereignty. The other Arab countries have state owned news media, why should Qatar be denied this right? The answer is simple- because Al Jazeera has become the largest and most successful. It has nothing to do with terrorism.
But, would international condemnation have any effect? Would action by the UN help?
The US policy began with tweets from Donald Trump, foolishly taking credit for the Saudi’s action. Then it seemed to more to neutral, offering assistance in resolving the crisis. Now, the policy seems to lean more towards Qatar.
The most immediate crisis is the deportation of thousands of Qataris from the other Arab countries. The most obvious step would be to delay these deportations. However, given the inevitable refusal of Qatar to accept any of the demands, the deportations are likely.
So, what is the path forward?
I note that there are many excellent articles on the Qatar crisis. I will provide more links in the future.