While there is global media outrage on the Middle Eastern support of ISIL and other militant groups in Libya, Syria and Iraq, no one seems to focus on the fact that the United States, one of the strongest Gulf allies and advocate of War on Terror, knew this all along. Yet, no concrete measures were taken by the Obama administration to stop such support to the militant groups. It was also mentioned in one the leaked emails on Wikileaks (mentioned below), that the United States has also been supporting rebel groups in Syria, which were also majorly responsible in the current chaos. Below is a Fox News story, from 2016, and the leaked email, which confirms the support.
This is what one of the leaks emails to Hilary Clinton said: