Senator Bernie Sanders has urged President Biden to end unconditional assistance to Israel’s military, saying the United States was complicit in a “mass atrocity” in Gaza. In a letter to the White House, Sanders urged Biden to slash his request for U.S. military aid to Israel by more than $10 billion, writing, “Israel’s military campaign will be remembered among some of the darkest chapters of our modern history. And it is being done with bombs and equipment produced and provided by the United States and heavily subsidized by American taxpayers.”

Bernie Sanders’s comments came as the Senate on Wednesday approved a record $886 billion military spending bill with bipartisan support. The House is expected to pass the bill as soon as today.

Meanwhile, Al Jazeera has obtained a letter signed by 139 staffers at the Homeland Security Department denouncing Secretary Alejandro Mayorkas and other top officials’ response to Israel’s assault. The letter, dated November 22, reads, ”DHS leadership has seemingly turned a blind eye to the bombing of refugee camps, hospitals, ambulances, and civilians.”