U.S. Senator Lindsey Graham accused Iran today, Sunday, of being involved in the attack carried out by Hamas on October 7th, and warned that any escalation of the war could cost Tehran dearly. Speaking during a visit to Tel Aviv, he said, "We are here today to say to Iran: We are watching you. If this war escalates, it will come to your backyard," without clarifying what that meant. He added, "The idea that this happened without Iranian involvement is laughable."