TL;DR Qatar is changing teams (like turkey has/is doing) considering the unsustainability of the KSA/US foreign policy
What's likely happening is Qatar has had to come to an agreement with Iran to supply their shared offshore gas reserve (North Dome/South Pars) to Indian and Chinese markets, and abandon the Syrian gas pipeline extension to Europe via Syria. Qatar and Iran are essentially producing out of the same massive offshore reserve in the Persian Gulf, and are competing on getting this gas to market.
Initially Qatar had planned a gas pipeline via Saudi and Syria en route to Europe, which was blocked by Syria back in 2012, and then Russia had officially entered the fray to defend their literal monopoly of the European gas market.
Enter ISIS, a Saudi-Qatari-US-Israeli backed private military contractors to overthrow Assad, get a puppet President in who would grant construction rights for the Qatari pipeline. This brute force strategy using foreign backed PMC's have utterly failed with Russian support.
From the other end, the United States have blocked Iran from building a gas pipeline through the military campaigns in Iraq, thus closing the Meditteranean corridor for Iran.
This has forced Iran to focus their attention on supplying the Asian market, most noteably China, who have been purchasing an increasing amount of oil and gas from Iran and Russia, and less and less from Saudi and the other gulf countries.
China is doing this to try to force Saudi, Qatar, and the gulf monarchies to accept the Yuan for oil/gas payments instead of USD, and is putting the Gulf monarchies on a collision course with the United States and threatening the Petrodollar mercantilism racket. Whenever the United States dollar is threatened, a false flag ensues, and a major military campaign is executed. Iraq and Libya are perfect examples.