Hypocrite Twins: Did you know Iran offered to help the United States defeat al-Qaeda?

Israel and Iran both are isolated by the same Sunni Arab enemies.  They both funded the same terrorist group Hamas.  And they both rival for the attention of the United States.  Iran and Israel are now bitter enemies but looking back at the history, you might think these two were destined to be star-crossed lovers.  Where did it all go wrong?