President Trump's Iran deal has opened an explosive second front in MAGA's civil war, waged by hawkish allies who view U.S. concessions as an existential betrayal of Israel.

Why it matters: Across two terms and 11 years in the political spotlight, no issue has divided Trump's base more than the Iran war.

When U.S. strikes began, leading isolationists — from Tucker Carlson to Marjorie Taylor Greene — were excommunicated for suggesting Trump had abandoned "America First" principles on behalf of Israel.

• Three months later, with an interim deal in hand and peace potentially on the horizon, the Republican hawks who cheered Trump into battle are now leading their own furious rebellion.

Driving the news: Pro-Israel conservatives are demanding to see the text of Trump's memorandum of understanding (MOU) with Iran, frustrated as much by the deal's secrecy as by its reported substance.

• The White House has given conflicting signals on timing: Senior officials said the text would be released Tuesday or Wednesday. Trump said it may come Friday, after a formal signing ceremony in Geneva.
• Republican leadership in Congress remains in the dark — and frustrated by the lack of detail.
• So is Israel, which hasn't seen the official MOU despite being a party to the ceasefire.

Trump inflamed the backlash on Tuesday by praising Iran's negotiators in a bilateral meeting with Qatar's emir, a key mediator distrusted by many pro-Israel Republicans.

• "We're dealing with people that I think are very rational people," Trump said, adding that Iranian officials were "nice to deal with," "not radicalized" and "looking to help their country."
• For hawks who view Iran's government as a terrorist regime incapable of reform, the president's language deepened their fear that the deal rewards Tehran for surviving the war.

Zoom in: The objections from Trump's pro-Israel allies fall largely into three buckets.

1. Money: The MOU would allow Iran to immediately begin selling oil while opening the door to sanctions relief, frozen funds and a $300 billion reconstruction fund during the next phase of nuclear talks. U.S. officials stress that financial relief would be tied to compliance, but hawks are apoplectic at the mere prospect of money flowing to Tehran.
2. Leverage: Months of overwhelming military force crippled Iran's nuclear infrastructure and conventional military defenses. By entering a 60-day negotiation window and lifting the naval blockade now, hawks argue Trump is trading away unprecedented leverage. Some even claim the regime was on the brink of collapse, though there's little evidence of that.
3. Trust: Critics reject the premise that Iran can be coaxed into moderation — a concern echoed inside Trump's own government. Axios reported that CIA Director John Ratcliffe warned Trump that U.S. intelligence has serious doubts about Tehran's willingness to make the nuclear concessions required for a final deal.

What they're saying: The backlash has been particularly scathing from allies Trump spent months amplifying as validators of his Iran campaign.

• Fox News contributor Marc Thiessen called the prospect of $300 billion for Iran "a disaster" — like offering Germany a Marshall Plan "while the Nazis were still in power."
• Fox News host Mark Levin, who spent months savaging anti-war voices like Carlson and Megyn Kelly, is now turning his fury toward the deal itself: "I sure as hell hope I am misreading and mishearing things," he wrote in a lengthy diatribe Tuesday.

• Many of the critics are careful not to attack Trump himself. Sen. Lindsey Graham (R-S.C.) called on "the architect of the deal, Vice President Vance," to come before Congress to defend it.

The other side: "Following the historic destruction of Iran's military capabilities through the successful Operation Epic Fury, President Trump and his negotiating team have brokered an excellent, performance-based MOU that advances the interests of the United States by ending the fighting, reopening the Strait of Hormuz to significantly lower energy prices, and forcing Iran to commit to abandon its nuclear ambitions," White House spokeswoman Olivia Wales told Axios.

• A senior U.S. official added: "President Trump listens to all opinions on any given issue — but everyone understands he is the final decision-maker. The President will always put the American people first."

Between the lines: Vance may be more vulnerable to the deal's political fallout than Trump, who can always pitch himself as the president who took on Iran when no one else dared.

• Vance, the likely 2028 heir to the MAGA throne and a longtime skeptic of foreign entanglements, helped negotiate the MOU and is expected to sign it Friday in Geneva.
• Defending the deal on Megyn Kelly's show Tuesday, Vance dismissed hawk critics as wanting "an endless conflict" that goes on "until every Iranian is dead" — then urged MAGA skeptics to stay inside the coalition.
• Vance's 2028 risk is that he inherit both sides of the rupture — a war that alienated MAGA's isolationists, and a deal that enraged its hawks.

The bottom line: "If the president signed a bad deal, many of us who cheered and stood by him and thought that his action in Iran was heroic, will be extraordinarily disappointed," conservative commentator Ben Shapiro told The Wall Street Journal.