I meant to say Russia, i apoligize for spelling mistake, but i can agree both countries are not the best, but generally, the Iranian regime is the most to be blames.
If he allowed to live in Jerusalem, then how come he ended up slaughtering the Jews in Khaybar? I'm aware your trying to say, that the Jews killed his son, but before all this, when the Jews were friends with the Prophete Mohammed and his army, prophet Mohammed would later purge those who didn't believe him, and the Jews were part of that, and the Jews felt betrayed.
Back then, the land wasnt called Palestine. Back then, it was called Canaan. Majority where Philistia. And when the Romans conquered it, they changed the name to Palestine, years after.