The Cheif Diplomat of Oman Badr Albusaidi (who was closely involved in the recent talks between America and Iran) wrote an Op-ed for the Economist, stating:
“America has lost control of its own foreign policy,” and Washington’s allies should help extricate it “from this unwanted entanglement”.
......Albusaidi blamed “Israel’s leadership” for persuading Trump to join the war on the false basis that Iran’s regime would offer an “unconditional surrender” after the assassination of its supreme leader Ali Khamenei.
“The American administration’s greatest miscalculation, of course, was allowing itself to be drawn into this war in the first place,” he wrote. “This is not America’s war, and there is no likely scenario in which both Israel and America will get what they want from it.”
Guardian link as original article behind a paywall
https://www.theguardian.com/world/2026/mar/19/us-lost-control-of-its-own-foreign-policy-oman-foreign-minister
Surprisingly, the Britain's national security advisor, who attended the last talks in Geneva confirmed that Iran had offered significant concessions and that a deal was on the table. It may explain Starmer's reluctance to help Trump:
"UK officials have subsequently explained they were impressed that Iran was prepared for the deal to be permanent and, unlike the 2015 nuclear agreement, would not have cut-off dates, or sunset clauses ending the restrictions on its programme.
Iran had also agreed to down-blend the 440kg stockpile of highly enriched uranium under the supervision of the IAEA inside Iran. It agreed no stockpiles of highly enriched uranium would be built up in the future."
Also notable is this:
"One Gulf diplomat with knowledge of the talks said: “We regarded Witkoff and Kushner as Israeli assets that dragged a president into a war he wants to get out of.”
https://www.theguardian.com/world/2026/mar/17/uk-security-adviser-attended-us-iran-talks-and-judged-deal-was-within-reach
Diplomatic options were still on the table, this is 100% a war of choice.