Why? This way Iran thinks they are friends AND they get paid.
“Sorry about the 1000 centrifuges, Hamid. Must have been those Zionists again. Give us $10 Billion more for a new, improved facility that God himself cannot destroy!”
How is that better or easier than conquering the area and getting paid anyway by taking over their oil fields?
Nope, the Russkies are quite happy with Iran going nuclear.