Austin, 70, spent 41 years in the military, retiring as a four-star Army general in 2016.

In a statement, Ryder said that at all times, Deputy Defense Secretary Kathleen Hicks “was prepared to act for and exercise the powers of the Secretary, if required.”

Austin’s hospitalization comes as Iranian-backed militias have repeatedly launched drones, missiles and rockets at bases where U.S. troops are stationed in Iraq and Syria, leading the Biden administration to strike back on a number of occasions. Those strikes often involve sensitive, top-level discussions and decisions by Austin and other key military leaders.

The U.S. is also the chief organizer behind a new international maritime coalition using ships and other assets to patrol the southern Red Sea to deter persistent attacks on commercial vessels by Houthi militants in Yemen.

In addition, the administration, particularly Austin, has been at the forefront of the effort to supply weapons and training to Ukraine, and he’s also been communicating frequently with the Israelis on their war against Hamas.

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