A major overhaul at the Pentagon that was started with the firing of former Secretary of Defense Mark Esper could be part of President Trump's plan to carry out last-minute troop withdrawals from countries like Afghanistan, sources have told several media outlets.

A Trump administration official told The Washington Post late Tuesday night that President Trump is still determined to withdraw troops around the world before leaving office. "He sees the Pentagon as the leader of the resistance to his agenda," the official said, speaking on condition of anonymity.

Another administration official told the Post that the shake-up that was ordered by the White House coincided with debates about the pace of troop withdrawals from places like Afghanistan and Somalia.

The Intercept published a story on Wednesday that cited a Trump administration official who made similar claims. The official said the overhaul was planned for months, and more firings are expected. "The president is taking back control of DoD. It's a rebirth of foreign policy. This is Trump foreign policy," the official said.