Secretary of State Marco Rubio outlined key conditions for a U.S. peace agreement with Iran during testimony before the Senate Foreign Relations Committee on Tuesday, marking the most detailed public articulation of the Trump administration’s negotiating stance to date. Rubio emphasized that Tehran must reopen the Strait of Hormuz—an essential maritime route for global oil shipments—and agree to future discussions aimed at limiting its nuclear program before Washington considers lifting its blockade of Iranian ports or easing the extensive financial sanctions that have severely impacted Iran’s economy.

Rubio’s remarks come amid escalating tensions fueled by recent retaliatory attacks between the United States and Iran, alongside intensified Israeli military actions in Lebanon, all of which threaten to undermine ongoing diplomatic efforts. The escalating volatility raises concerns over the potential collapse of negotiations intended to de-escalate the conflict.

Following his Senate appearance, Rubio also testified before a House panel reviewing the State Department’s budget, where he defended the administration’s nearly $36 billion funding request. The hearings, scheduled to continue on Wednesday, provide a platform for the secretary to justify the department’s allocation amid growing scrutiny over U.S. involvement in the Middle East.

Rubio, who also serves as President Donald Trump’s national security adviser, engaged with congressional members in a substantially more measured tone compared to Defense Secretary Pete Hegseth’s earlier testimony. Hegseth sparked controversy with confrontational remarks targeting lawmakers critical of the Iran conflict. In contrast, Rubio’s exchanges were largely civil, although legislators pressed him for clarifications on the ongoing war and diplomatic efforts.

Bipartisan frustration has mounted over the costs and political ramifications of the conflict ahead of the November midterm elections. Lawmakers questioned Rubio on the administration’s blockade strategy, underscoring concerns about its global economic impact and broader geopolitical consequences.

Rubio reiterated that any U.S. relief from sanctions or blockade measures remains contingent on Iran’s willingness to engage in substantive talks on nuclear constraints and secure the Strait of Hormuz. Until Tehran meets these conditions, Washington maintains a firm policy stance aimed at curbing Iranian influence and preventing further escalation in the region.