No, it was Putin that laid the groundwork for the war against Ukraine. There was no enabling of Iran, you are probably referring to Obama relaxing the controls on Iranian money for the JCPOA. Then la Presidenta came into office, canceled the JCPOA because it had Obama's signature on it. He said he would replace it with something better. It took him until this second term when we found out that the better replacement meant $4+/gal. gasoline, Iran having de facto control of the Hormuz straight, and an even more entrenched Iranian regime. And now with the high price of oil, Putin and Iran are getting a lot of revenue, especially since Iran is cutting deals with countries and shipping their oil, and Putin is doing what he does best, kleptocracy.
It seems el Bunko figured that all that pay-for-play with Arabs would cause them to support his war. They didn't and now they feel jilted because it is clear to them it was only pay-for, the play sort of got lost in el Bunko's dementia. And his dementia meant he was easy pickins' for Netanyahu, although he has always been an easy mark.
It seems dimbulb figured Iran was just like Venezuela. He was deluded on so many accounts. He saw all that oil for easy deals. However, most of Venezuela's oil, if any of his sycophantic bozos cared to check, is like tar and good for asphalt and not much else without a lot of processing. It doesn't bubble up from the ground either. To get it you need to pump the oil field full of chemicals and steam. This is way in the meeting he had with Big Oil executives, they were highly unenthusiastic about V.'s oil.
Iran's oil will be also unavailable. He thinks American companies will simply stick straws into the ground and suck it out. However, another reason the Big Oil execs were unenthusiastic was that they didn't want to get into any politics in V., which would be necessary to get any of that black tar goo. And what Big Oil company is going to be dumb enough to help steal Iran's oil when they'd be under constant attack.
Remember the first rule of el Bunko: he destroys everything he touches.