The US has threatened to cut military aid to Israel due to its obstruction of humanitarian aid to Gaza and proposed laws that would affect the UN agency caring for Palestinian refugees. The Biden administration's letter, leaked to Israeli journalists, criticizes Israel's actions and calls for an expedited aid operation. It also expresses concern over plans to confiscate UNRWA's headquarters in East Jerusalem. The US warns that such restrictions would have devastating effects on the humanitarian effort in Gaza and the welfare of Palestinians in East Jerusalem and the West Bank.