Obama's diplomacy did a better job handling Iran's nuclear program than Trump's maximum pressure (when he left the JCPOA) or than his bombing.  We were safer then than we are now. And we would have been safer had Trump finalized the deal he was negotiating last month.

Before the JCPOA, Iran had 11,000 kg of enriched uranium up to 20%. That meant a breakout time (the time it would take Iran, if it decided to dash for a bomb, to enrich enough uranium to weapons grade -- which is 90% -- for one bomb) was 2 to 3 months.

With the JCPOA, Iran was allowed to possess 300 kg or uranium enriched to no more than 3.67%.  That meant a breakout time of 12 months.  The cap on enrichment would have lasted 15 years. That means a framework to deny Iran the bomb for 15 years.

After Trump's withdrawal, by 2025, Iran had over 6,000 kg or uranium enriched to up to 60%.  That meant a breakout time of a week or two. Trump literally caused this crisis by ripping up the JCPOA with no alternative. Maximum pressure did not work.

Today, we don't know where the enriched uranium is, and in particular where the 400kg of 60% enriched uranium is, though it is suspected to be buried underneath one of the nuclear sites bombed by the US. There is no evidence that the strikes in June or now have destroyed this.

The only solution for anyone that truly cares about Iran not being nuclear is statesmanship and diplomacy, facilitated by nations like Oman, to deny them nuclear enrichment. They also pose no imminent threat to our homeland as they have no ICBM.