The Senate on Wednesday rejected attempts by Sen. Bernie Sanders Wednesday to block sales of offensive weapons to Israel for its war in Gaza over mounting civilian deaths there.

The Vermont lawmaker and a small group of Democrats sought to put legislation up for a Senate vote that would block the sale of some tank and mortar rounds and smart-bomb kits to Israel. The first attempt to block the sales was rejected overwhelmingly, and two more efforts also went down to defeat.

Sanders, in making the case for stopping the sales, said Israeli Prime Minister Benjamin Netanyahu’s government “has not simply waged war against Hamas. It has waged an all-out war against the Palestinian people.”

Joint resolutions of disapproval, the measures would have had to pass both houses of Congress and withstand any presidential veto to become binding. Congress has never succeeded in blocking any arms sales with the joint resolutions. But the vote served as a test of broader frustration among Democra