Iran Regime Change: Mossad Chief Estimated One-Year Timeline

Mossad Director David Barnea assessed ahead of the war with Iran that efforts to bring about regime change in Tehran would most likely take about a year, according to a new report, underscoring a more cautious intelligence outlook than some public expectations.

Barnea presented several possible timelines to Israel’s leadership before the conflict began, including scenarios in which change could occur within months. However, the estimate of roughly one year was viewed as the most realistic, sources familiar with the assessment said.

The report comes as unnamed officials in recent days have criticized Barnea, accusing him of overstating the likelihood or speed of regime change. Those claims have emerged amid growing questions in Israel and the United States over the lack of visible political upheaval in Iran several weeks into the war.

According to the report, Barnea’s assessment was more qualified than critics have suggested. He did not present regime collapse as imminent or guaranteed, but rather as a possibility dependent on a range of factors, including internal unrest and sustained pressure on the regime.

Israeli defense officials have long maintained that military operations can weaken Iran and create conditions for change, but cannot directly bring down the regime on their own.

The report also indicates that Barnea’s briefings to US officials were coordinated with Prime Minister Benjamin Netanyahu and reflected official policy discussions, rather than independent proposals. Any strategic recommendations would have been presented within the framework set by Israel’s political leadership.

Barnea is described by officials as a cautious and methodical decision-maker who typically outlines multiple scenarios and emphasizes uncertainty. In previous cases, he has pushed back against proposals he viewed as operationally unrealistic, even under political pressure.

Some reports on pre-war discussions highlighted more ambitious ideas, including efforts to mobilize Iranian opposition groups or support external actors. However, these plans were accompanied by reservations regarding feasibility and timing, the report said.

The Mossad chief has in recent years been associated with a longer-term strategy aimed at gradually weakening the Iranian regime through sustained pressure, rather than expecting rapid collapse. That approach reflects assessments that internal political change in Iran would likely unfold over an extended period.

The current criticism of Barnea appears to be linked to broader tensions over expectations for the war’s outcome. Israeli and US officials have faced increasing scrutiny over the absence of clear progress toward regime change, particularly as the conflict enters its fourth week.

Neither the Prime Minister’s Office nor the Mossad has publicly responded to the latest report.

The findings highlight the gap between initial expectations in some political circles and the more cautious timelines typically associated with intelligence assessments regarding regime change.