Israel-Gaza updates: 300,000 have fled Rafah, UN agency says

The White House is watching the situation that is playing out in Rafah "very, very closely," but arguing that based on what Isarel has told them, this is not equivalent to the full-scale invasion the U.S. has been warning Israel against undertaking, U.S. National Security Council Coordinator John Kirby told reporters Tuesday.

"We've been told by our Israeli counterparts this operation last night was limited and designed to cut off from Hamas' ability to smuggle weapons and funds into Gaza. Our views on Rafah remain the same. We've repeatedly and consistently expressed those views about a major operation in Rafah in densely populated areas that would give higher risk to civilians and civilian casualties," Kirby said.

"President Biden made that very clear yesterday when he spoke to Prime Minister Netanyahu as I said yesterday, and we're going to be monitoring this situation very closely to see how it unfolds," Kirby said.

Kirby was also asked if he believes that Isarel was abiding by international law, given the two main arteries to get aid into Gaza have been choked off. Kirby sidestepped the questions, underscoring the U.S. desire to get more aid into Gaza and Biden's explicit ask of Netanyahu to make sure that happens during their call Monday.

-ABC News' Molly Nagle

Hamas' delegation has arrived in Cairo as cease-fire negotiations continue with mediators in Egypt and Qatar.

Hamas said Monday it had agreed to a cease-fire deal, but Israel said the agreement included "significant gaps" that needed to be worked out in negotiations.

-ABC News' Will Gretsky

The Biden administration is delaying shipments of ammunition that were expected to be sent to Israel, according to three U.S. officials.

The Biden administration has been trying to pressure Israel to hold off on a full-scale invasion of Rafah until it has a plan to protect the million civilians now living there.

The Air Force has been told by the White House’s National Security Council to pause shipments of ammunition deliveries specifically from Dover Air Force Base, according to a U.S. official. The NSC was behind the decision to pause the munitions, a second U.S. official confirmed.

The National Security Council did not immediately respond to a request for comment.

-ABC News' Martha Raddatz, Anne Flaherty, Matt Seyler and Ben Siegel

House Speaker Mike Johnson and Majority Leader Steve Scalise have publicly accused the Biden administration of withholding aid to Israel following reports that some aid shipments have been halted. Johnson said that the Biden administration as recently as Friday had assured his staff that there would be "no delay" in assistance to Israel.

Johnson said he received a report this morning from on the ground in Israel that said "a shipload of munitions and precision weapons, which are to be used to help protect civilians and Rafah, is being withheld."

In a letter to President Joe Biden, Senate Republicans Jodi Ernst and Ted Budd said they are "shocked" and "deeply concerned" that the Biden administration failed to notify Congress before withholding ammunition to Israel.

"If these reports are true, then you have once again broken your promise to an American ally," they said.

-ABC News' Lauren Peller and Shannon Crawford