Five Palestinian families have sued the US State Department over military aid to Israel, demanding the enforcement of US rules to curb arms flows due to allegations of human rights abuses. The complaint calls for the implementation of the so-called Leahy Law, which prohibits the provision of security assistance to units facing credible allegations of human rights abuses. Since the start of Israel's war against Hamas, the United States has provided over $12.5 billion in direct military aid to Israel. The lawsuit alleges that US weapons were used in Israeli airstrikes that killed Palestinian civilians.