We had a look in the 1960's. The UAR and OPEC were formed back then -- Iraq, Syria, and Egypt confederated as Arab-nationalist (and socialist) "frontline states" determined to erase "the Zionist entity". How did that work out? How did OPEC work out? The Arabs are the original "gang that couldn't shoot straight". Their habitual and inflammable quarrelsomeness militates against any prolonged, disciplined effort toward a strategic goal. These guys are not the Nazi Germans, n/w/s their admiration for, and emulation of, the Nazis.
Unfortunately, there have been periods when the Middle east has been basically unified and during those periods it was a great danger to Western Civilization. It already is again and it is not even unified.