In a deeply consequential moment for U.S.-Israel relations, Sen. Bernie Sanders spearheaded a Senate effort to block hundreds of millions of dollars in weapons sales to Israel, bringing to the table one of the most revealing votes in some time about shifting political attitudes in Washington.

The resolutions targeted approximately $450–500 million in military aid, including bombs and heavy equipment used by Israel in its ongoing war against Iran, Hezbollah, and Hamas. While the measures ultimately failed in the Senate, ensuring that the arms sales will proceed, the outcome exposed a significant and sad development beneath the surface.

A large portion of the Democratic Party backed the effort to cut off Israel.

Roughly 36–40 Democratic senators voted in favor of blocking the weapons, marking a huge surge compared to similar votes in prior years. By some counts, as much as 75% of Senate Democrats supported at least part of the effort to stop assisting Israel, numbers that would have been unthinkable not too long ago.

Sanders, who has long pushed to end U.S. military aid to Israel, framed the vote as a moral one, accusing Israel of wrongdoing and genocide, arguing that American taxpayer funds should not be used in such conflicts. Opponents, largely Republicans along with a smaller group of Democrats, disagreed and argued back that such a decision would terribly weaken Israel in the middle of an active war on multiple fronts, embolden Iran and its proxies, and send a dangerous signal of instability in U.S. foreign policy.

So the weapons stay for now. But beyond the immediate vote, the concern lies in what it revealed. For decades, support for Israel was a reliable bipartisan cornerstone of American policy. This vote, however, suggests that the foundation may be shifting. The fact that such a large majority of Democratic senators were willing to support restricting military aid, even as Israel faces active threats on multiple fronts, is raising alarms among pro-Israel advocates and policymakers.

For Israel, these developments are very worrisome. While current aid remains intact, questions are now floating about the long term reliability of U.S. support, particularly from one of the two major political parties.