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Children sift through waste at a landfill in Khan Yunis in the southern Gaza Strip on October 15, 2024, amid the ongoing war between Israel and the Palestinian militant group Hamas in the besieged Palestinian territory.

The Biden administration has warned Israel that if the humanitarian situation in Gaza doesn't improve within the next 30 days, the U.S. may restrict military assistance to Israel.

In a letter Sunday to Israeli Defense Minister Yoav Gallant and Israel's Minister of Strategic Affairs, Ron Dermer, Secretary of State Antony Blinken and Defense Secretary Lloyd Austin said that the U.S. must continually assess under its own law whether Israel is "directly or indirectly" impeding the transport of U.S. humanitarian assistance to Gaza. If it is, they warned the U.S. could halt additional Foreign Military Financing, according to two U.S. officials and a Defense official.

State Department spokesperson Matt Miller confirmed the existence of the letter in a briefing Tuesday but would not comment on what consequences Israel would face if the flow of humanitarian aid into Gaza does not improve.

The Biden Administration sent a similar warning to Israeli officials in April ahead of a required report, and the U.S. ultimately determined the actions taken by Israel to improve the humanitarian situation afterward met the requirements under the law.

"We have been having a number of ongoing conversations with them about the very serious decrease in the level of humanitarian assistance," Miller said Tuesday. "Ultimately, we did not see our concerns sufficiently addressed, which is why the two secretaries sent the letter."

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