I feel like the movement to pressure the Democratic candidate to be more explicit about ending the war has been the only structural pressure available in the last year.
The US has vetoed resolutions to come to a ceasefire in the UN Security Council. The US and Israel have considered the decisions of the UN General Assembly non-binding, and the requirements of the Internation Court of Justice as moot since Israel is supposedly already in compliance. Neither country is a member of the ICC.