The United States has warned Israel that it will face consequences if it does not allow more humanitarian aid into Gaza within 30 days. U.S. and United Nations officials have expressed concern over the deteriorating humanitarian situation in Gaza, particularly in the north, as Israel has imposed restrictions on aid delivery. The level of humanitarian assistance has fallen by over 50 percent from its peak, and September saw the lowest level of aid since the Hamas-led attacks in Israel. The U.S. letter, signed by Defense Secretary Lloyd J. Austin III and Secretary of State Antony J. Blinken, raises the possibility of suspending military aid to Israel if it continues to block the delivery of U.S.-provided humanitarian aid.