By Kanishka Singh and Steve Holland WASHINGTON (Reuters) – The White House said on Sunday there was no change in its Israel policy after NBC News reported the United States was discussing using weapon sales to Israel as leverage to convince the Israeli government to scale back its military assault in Gaza. “Israel has a right and obligation to defend themselves against the threat of Hamas, while abiding by international humanitarian law and protecting civilian lives, and we remain committed to support Israel in its fight against Hamas. We have done so since Oct. 7, and will continue to. There …