This story was published first by ProPublica, a nonprofit newsroom that investigates abuses of power. Sign up for ProPublica’s Big Story newsletter to receive stories like this one in your inbox as soon as they are published. The US government’s two foremost authorities on humanitarian assistance concluded this spring that Israel had deliberately blocked deliveries of food and medicine into Gaza. The US Agency for International Development delivered its assessment to Secretary of State Antony Blinken and the State Department’s refugees bureau made its stance known to top diplomats in late April.