I have watched news in the Middle East quite closely for some time. This blockade mess for Qatar (called the "Qatarstrophie" by some joker in Lebanon) should be getting more news coverage than it does. There must be a significant chance (say 30%?) that Saudi Arabia will invade Qatar in the next 2-3 weeks. That will probably bring Saudi Arabia into direct military conflict with a NATO member (Turkey) that has been flying troops in. Iran may possibly get involved, as Qatar and Iran share one of the world's largest gas fields and has a deal with Qatar to help develop it. This has the possibility (not yet the probability) of being a major mess, and war.
US Secretary of Defence and Sectretary of State are all saying and doing the right thing to de-escalate, but Trump has undermined them with silly tweets. Trump is not the cause of this mess, but could probably solve everything with a phone call. Will he?