U.S. Secretary of State Marco Rubio said to the Senate Foreign Relations Committee on Tuesday that Mojtaba Khamenei is alive and increasingly engaging in Iranian affairs.

This testimony provides a critical update on Iran's internal power structure following a U.S.-Israel strike several months ago [2] that injured Mojtaba and killed his father. The revelation suggests a shift in the leadership dynamics of the Islamic Republic during a period of stalled nuclear negotiations.

Rubio said that Mojtaba Khamenei, 56 [1], is "increasingly engaging" in negotiations between the U.S. and Iran. Despite this increased activity in the political sphere, Rubio said that the public has not seen him. "We haven't seen him publicly," Rubio said.

The Secretary of State also detailed the role of the Islamic Revolutionary Guard Corps (IRGC) in shaping the current diplomatic landscape. Rubio said the IRGC maintains a significant hold over the negotiations, influencing the terms and trajectory of talks between Washington and Tehran.

According to Rubio, these developments reflect shifting internal dynamics within the Iranian government. The involvement of the Supreme Leader's son, coupled with the IRGC's influence, complicates the U.S. effort to reach a stable agreement on nuclear proliferation.

The testimony occurred during a hearing in Washington, D.C., where lawmakers questioned the administration on its strategy for the Middle East. Rubio said that the presence and activity of Mojtaba Khamenei are key factors in understanding how Iran is managing its transition and external relations.

"Mojtaba Khamenei is 'increasingly engaging' in negotiations between the U.S. and Iran."

The emergence of Mojtaba Khamenei as a functional political actor suggests that Iran is consolidating power within a tight family and military circle. By linking the IRGC's influence to the active role of the Supreme Leader's son, the U.S. is signaling that diplomatic efforts are no longer just about state-level policy, but about navigating a complex internal power struggle between the clerical establishment and the military wing.