Enemy has always been Islam. WW1 and WW2 were based on colonial gain and industrialization. Islam was left alone because they could no fight the TURKS who were right at the doors of Europe. This brought the to a power struggle that was actually based to take ultimate power and then form an army that would fight the Turks but what WW1 did was it made UK and USA to find ways to provide divide in he Muslim world and that ended the Arab Unity.
Please watch this movie and you would understand.
Oh I know. I've studied this deeply. It's also probably the most shameful history that's left a mark on Muslims that can't be erased.