Graham, a longtime foreign policy hawk, also called the idea that Iran was not involved in the Oct. 7 Hamas-led attack on Israel’s southern border “laughable.” Iranian officials commended Hamas’ operation, but initially denied involvement in the attack.

U.S. and Israeli officials have also said they are unsure if Iran was involved in the attack, but a spokesperson for the Israel Defense Forces told POLITICO they were “100 percent sure that the Iranians were not surprised,” by the attack.

Hezbollah fighters had killed at least one person and wounded three others in a missile strike on an Israeli northern border village Sunday, the militant group and Israeli medics said according to Reuters.

A spokesperson for the Israeli military also warned Hezbollah on Sunday.

“I would highly recommend that Hezbollah watch very closely what is happening to Hamas and their organization in Gaza as we speak,” Lt. Col.(r) Peter Lerner said on ABC’s “This Week.” “If they have, they should be very cautious of crossing that threshold because we are determined to defend the state of Israel.”