Katz was sworn in before parliament the previous day, after his predecessor's shock dismissal by the prime minister over a breakdown in trust during the war in Gaza -- a conflict that began with a devastating Hamas attack against Israel on October 7, 2023.

Austin "held an introductory call today with the new Israeli minister of defense, Israel Katz, and congratulated him on his recent appointment," Pentagon spokesman Major General Pat Ryder said in a statement.

He told Katz that Washington is committed to a deal that allows Lebanese and Israeli citizens displaced by more than a year of cross-border violence to return to their homes, as well as to the return of hostages seized by Palestinian militant group Hamas, Ryder said.

The US defense chief also discussed "the need to improve the dire humanitarian conditions in Gaza," after he and Secretary of State Antony Blinken told Israel in a letter earlier this month that it needed to allow more aid into the small war-wracked coastal territory.