US Chairman of the Joint Chiefs of Staff Gen. Dan Caine has reportedly raised concerns with senior Trump administration officials about the limits of further military escalation against Iran and the need to explore a possible path toward ending the conflict, CNN reported Saturday.
Citing three people familiar with the discussions, CNN reported that Caine has in recent weeks discussed the risks and limitations of available military options with senior officials, including CIA Director John Ratcliffe, Secretary of State Marco Rubio and Vice President JD Vance.
According to the report, Caine’s concern is not that the United States lacks the ability to inflict significant damage on Iran, but whether continued airstrikes alone could achieve the political objectives set by President Donald Trump. The report said the general has warned that airpower without US ground forces may not be sufficient to compel Tehran to accept an agreement on Washington’s terms.
The reported discussions come as the conflict approaches its sixth month and the Trump administration weighs further military action against the potential risks of a broader and less controllable war.
CNN also reported that Caine has raised concerns about US stockpiles of key munitions. The issue was reportedly discussed during a White House meeting involving Trump and senior officials late last month.
Caine’s spokesperson, Joseph Holstead, declined to discuss the chairman’s confidential conversations with the president and other officials. He also rejected what he described as anonymous characterisations by people who were not present during the discussions.
The White House has defended Caine’s performance, while the State Department and CIA did not comment on the reported conversations, according to CNN.
Trump has repeatedly ruled out committing US ground troops to Iran and has argued that sustained airpower can pressure Tehran into reaching an agreement. The reported discussions point to an ongoing debate within the administration over whether continued military action can achieve those objectives.
Diplomatic efforts have also focused on finding a way to reduce hostilities and address the status of the Strait of Hormuz, a critical global shipping and energy route. Any disruption to the waterway has broader implications for regional trade and the global economy.
Caine has previously played a prominent role in US military planning involving Iran. In June 2025, he briefed reporters on US strikes against Iranian nuclear facilities, including the operation involving B-2 bombers.
The reported push for an “off-ramp” does not indicate that Washington has decided to end military operations. Rather, it reflects reported concerns within the US administration over the limits of military power, the risks of escalation and whether a diplomatic settlement may ultimately be necessary.
The Pentagon and White House have not publicly confirmed the substance of Caine’s reported private discussions. The claims remain based on anonymous sources cited by CNN.