Israeli Prime Minister Benjamin Netanyahu on Tuesday claimed the United States is withholding weapons and implied this was slowing Israel’s offensive in the southern Gaza city of Rafah, where fighting has exacerbated the already dire humanitarian situation for Palestinians. President Joe Biden has delayed delivering certain heavy bombs to Israel since May over concerns about the killing of civilians in Gaza. However, the administration has gone to lengths to avoid any suggestion that Israeli forces have crossed a red line in the deepening Rafah invasion, which would trigger a more sweeping ban…