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The Pentagon abruptly announced that the secretary of the US navy, John Phelan, would be leaving his job yesterday. No reason was given for the unexpected departure of the navy’s top civilian official, who had addressed a large crowd of sailors and industry professionals at the navy’s annual conference in Washington just a day before the announcement.

People familiar with the dynamics at the Pentagon told the Guardian Phelan was fired. Phelan had an increasingly rocky relationship with the US defence secretary, Pete Hegseth, and other senior staff.