For your Sunday edification, I have chosen three relatively short YouTube videos. The first two from Prager U discuss the ramifications of the acrimony that the Arab world has for Israel and the general formation of ISIS, respectively. The third is Vladimir Putin's understanding of what led ISIS to be what it is today and who propelled it. I think that all three are on point and recommend them.
A view of the region and Israel
And what about ISIS?
Putin on the creation of ISIS.