Israel-Gaza updates: Netanyahu says Israel 'can't be flexible' on some issues

Hamas said it will not be attending cease-fire negotiations in Doha, Qatar, on Thursday.

"The movement demands a clear commitment from the occupation to what was agreed upon on July 2, according to the clarifications conveyed by the mediators, and if that happens, the movement is ready to enter into the mechanisms for implementing the agreement," Hamas Political Bureau Member Dr. Suhail al-Hindi told Al-Araby Al-Jadeed TV.

Israeli Prime Minister Benjamin Netanyahu approved the sending of an Israeli delegation to Doha, Qatar, on Thursday to continue negotiations for a cease-fire agreement.

This comes as Netanyahu is receiving pushback internally and externally amid reports he changed the parameters of what he would agree to.

President Joe Biden addressed the rising tensions in the Middle East Tuesday after U.S. officials warned Iran could launch a retaliatory attack on Israel as early as "this week."

Biden told reporters he expects Iran to hold off on carrying out a retaliatory attack against Israel if a cease-fire deal with Hamas is reached.

"That’s my expectation, but we’ll see," Biden said after arriving in New Orleans, LA.

Last week, Biden along with the leaders of Egypt and Qatar jointly called for Israel and Hamas to return to the negotiating table and reach an agreement that would free hostages and end the war in Gaza.

Hamas leaders declined the new set of cease-fire conditions on Sunday, asking for negotiations to resume around what was presented in July.

-ABC News' Justin Gomez

The U.S. State Department has signed off on several large arms transfers to Israel, notifying Congress on Tuesday that it has approved the sale of more than $20 billion worth of weaponry and military equipment.

All of the sales surpass the value threshold that requires the State Department to formally notify Congress 15 days before initiating the transfer process. Congress can move to reject the transaction by adopting a joint resolution of disapproval within that timeframe.

Some of the items aren’t scheduled to arrive in Israel for years.

-ABC News' Shannon K. Kingston