Katharine,
Biden can stop protecting Israel in the UN and halt offensive weapons America supplies to Israel.
Biden takes incremental actions and never bold actions when the situation demands them (bold, not to be confused with reckless, as in Afghanistan).
Netanyahu and Putin easily exploit this pattern of Biden. They could cost Joe the presidency without resorting to campaign interference.
It's hard to imagine the suffering in Gaza, and Israelis appear not to comprehend the damage they are inflicting on their country.
I invite you to read "Was Biden Netanyahu's Chum or Chump?" which I wrote before the invasion of Gaza.
Many thanks. Best.