US-Iran deal threatens Netanyahu’s political legacy

Trump has publicly rebuked Israel’s military conduct in Lebanon, while Vice President JD Vance warned Israeli critics against “attacking the only powerful ally they have left.”

The interim agreement between Washington and Tehran may leave Israeli Prime Minister Benjamin Netanyahu as its most significant casualty, analysts and former officials say, undermining the political identity he built over decades as the leader who could uniquely align U.S. policy with Israel’s stance on Iran.

Netanyahu cultivated his brand on the claim that he alone could keep the two allies in lockstep against Tehran. He built deep ties with Republicans, addressed Congress more than any other Israeli leader, and was once described as the “American whisperer.” But the U.S.-Iran accord signed last week to end the war launched in February has reversed that narrative. Rather than shaping Washington’s approach, Netanyahu now faces a U.S. president intent on disengagement, treating Israeli objections as obstacles.

Former U.S. official Dennis Ross said Netanyahu is boxed in between a domestic base opposed to concessions and a White House determined to end the conflict. Withdrawal from Lebanon risks backlash at home, while escalation risks confrontation with Washington.

The war Netanyahu hoped would cement his legacy has instead exposed his vulnerabilities. He failed to deliver the collapse of Iran’s leadership, defeat Hezbollah, or secure safety for northern Israel. “The U.S.-Iran deal is a decisive blow to Netanyahu,” said Aviv Bushinsky, a former adviser. “Not only did he lose the war with Iran, he has also lost Trump as a friend.”

Trump has publicly rebuked Israel’s military conduct in Lebanon, while Vice President JD Vance warned Israeli critics against “attacking the only powerful ally they have left.” Analysts say Washington has sidelined Israel from key decisions, folding Lebanon’s conflict into a broader framework and creating mechanisms to manage ceasefire disputes.

Netanyahu’s reliance on Republican support has also eroded. For years he used it to counter tensions with Democratic administrations, denouncing Barack Obama’s 2015 nuclear deal from a congressional podium. But Republicans will not break with Trump for Netanyahu, leaving him without his traditional safety net.

The deal also undermines Netanyahu’s strategic bets. He sought to weaken Iran’s leadership and secure normalized ties with Saudi Arabia through the Abraham Accords. Neither goal has materialized. Iran’s rulers remain entrenched, while Saudi normalization has stalled. Gulf states are hedging, reopening channels with Tehran and slowing engagement with Israel.

Regional sources say the Gaza war, unresolved West Bank annexation, and perceptions of Israel as a liability have eroded the logic of the Abraham Accords. An Iranian official said Netanyahu’s push has been blunted, with countries now seeking a place in an emerging Iran-aligned framework. “This is not just a victory for Iran. It’s a failure for Netanyahu,” the official said.

As Israel heads toward autumn elections, Netanyahu faces isolation abroad, constraints from Washington, and a domestic reckoning. The political asset he built his career on—his ability to shape U.S. policy on Iran—has become his greatest liability.