Pentagon Ousts Navy Secretary John Phelan Amid Rapid Military Leadership Purge and Iran Blockade

Pentagon removes Navy Secretary John Phelan. Hung Cao named acting secretary as Defense Secretary Pete Hegseth continues a sweeping purge of military leaders.

By: AXL Media

Published: Apr 23, 2026, 3:03 AM EDT

Source: Information for this report was sourced from AP

Sudden Leadership Transition at the Pentagon

The Department of Defense confirmed on Wednesday that Secretary of the Navy John C. Phelan has exited his role effective immediately, according to a statement from Pentagon spokesperson Sean Parnell. The announcement provided no specific reasoning for the departure, though it was delivered on behalf of the Secretary of War and Deputy Secretary of War. Phelan, a former investment executive and major political donor, had been confirmed to the post in March 2025. His removal represents the first departure of a service secretary during the current administration’s second term, signaling a continued overhaul of the civilian and uniformed military hierarchy.

Acting Secretary Hung Cao Takes Command

Undersecretary Hung Cao has been designated as the acting secretary of the Navy to fill the sudden vacancy. Cao, a 25 year veteran of the Navy who retired at the rank of captain, previously sought a U.S. Senate seat in Virginia before being confirmed as undersecretary in October 2025. He is the first Vietnamese American to lead the service in an acting capacity, bringing significant combat experience from deployments in Iraq, Afghanistan, and Somalia. Unlike his predecessor, Cao has a deep background in naval operations, which may influence the service’s direction as it navigates heightened maritime tensions.

Abrupt Departure Following Industry Keynote

The timing of Phelan's exit has surprised many within the defense community, as it occurred only 24 hours after he delivered a keynote address at the Sea, Air, Space Exposition in National Harbor, Maryland. During his Tuesday speech, Phelan aggressively defended the administration’s "Golden Fleet" initiative and the development of the Trump class battleship, dismissing critics who viewed the platforms as too costly or vulnerable. There was no indication during his public appearance or subsequent meetings with the House Armed Services Committee that he was on the verge of leaving the administration, suggesting the decision was made with little advance notice.