“Reagan and Bush 41, as well as Israel, aided both sides in the Iran/Iraq war. This suggested a strategy to prolong the war and to maximize the damage to both belligerents.”
It wouldn’t be prolonged much, and the Iranian people would be united with the regime against the MEK....that’s not a desired a effect. Neither is having the previously pro-American Iranian people angry & turning against the U.S. for supporting the slaughter that will certainly occur.