How about you just use your head? In the seventh century, Mohammed led a small group of nomads out of Arabia to conquer the Middle East, North Africa and Spain. The conquerors were Arabs. The people who were conquered were Egyptians, Syrians, Spanish, and Persians etc. You keep being stubborn, but I'll bet you wouldn't be insisting that Spanards are Arabs. During the Inquisition, Ferdinand and Isabella expelled the Moors and Jews from Spain. Obviously, they could tell the difference. So could you. If not, you would see no difference between Jews and Arabs in Palestine. Mohammed conquered Jerusalem, too.
One would think balkanizing what Arabs themselves consider to be Arabs is less likely to produce stability in the region. Using my head doesn't leave me enamored of a bridge to the 12th century.