Senator John Fetterman's chief of staff quit after he was the only Democrat to vote against limiting Trump's war powers in Iran, raising fresh questions about who is influencing him.

• Cabela St. John resigned as Fetterman's third chief of staff, citing his eighth vote against limiting Trump's Iran war powers.
• Fetterman has shifted from progressive campaigner to strongly pro-Israel senator, isolating himself from other Democrats.
• A private Orthodox Jewish fundraiser named Davi Safier, with no official role, reportedly sits in Fetterman's office daily and joins his calls with Israeli Prime Minister Netanyahu.
• Netanyahu gifted Fetterman a silver-plated beeper referencing Israel's exploding-pager attack, which Fetterman said he loved.
• Fetterman has told staff he sees himself as a possible 2028 Democratic vice presidential pick, shocking aides who say his party hates him.

Outlook: More staff departures and growing scrutiny of foreign influence on Fetterman are likely, but he shows no sign of changing course.