You're forgetting that a perfectly serviceable truce was established with the JCPOA until Trump tore it up to satisfy Israeli interests.

JCPOA was horrible. It was a lifeline to the regime and allowed it to build a massive arsenal of drones, ballistic missiles, etc., while it got to keep underground enrichment facilities. That nuclear program did not have a civilian purpose, its sole purpose was projecting power in the region and intimidating Israel.

The only durable way achieve peace in the Mideast is the collapse of Iran and of its regional proxies. Disarming Hamas, Hezbollah, and the Houthis is a necessity before things like rebuilding Gaza is possible at all.

That's true: Obama bucked the trend. Overall, there were still many powerful interests in the US who despised Iran waiting to take power. I'd still call it just a matter of time.