Top US officials quietly reviewed more than a dozen incidents of alleged gross violations of human rights by Israeli security forces since 2020, but have gone to great lengths to preserve continued access to US weapons for the units responsible for the alleged violations, contributing ... to the sense of impunity with which Israel has approached its war in Gaza. An estimated 24,000 Palestinians, mostly women and children, have been killed by Israeli forces since Hamas's 7 October attack on Israel. Special mechanisms have been used over the last few years to shield Israel from US human rights laws, even as other allies' military units who receive US support including, sources say, Ukraine " have privately been sanctioned and faced consequences for committing human rights violations. Under the Leahy law ... a foreign military unit is granted US military assistance or training after it is vetted by the state department for any reported human rights violations. The law prohibits the Department of State and the Department of Defense from providing funds, assistance or training to foreign security force units where there is "credible information" that the forces have committed a gross violation of human rights. In the case of at least three countries " Israel, Ukraine and Egypt " the scale of foreign assistance is so great that US military assistance can be difficult to track, and the US often has no knowledge of where specific weapons end up or how they are used.