Iran has vowed to avenge the killing of Hamas’s political leader Ismail Haniyeh, who died in an overnight air strike in Tehran, according to Iranian media.<br /> <br />Hamas and Iran blame Israel for the strike - Israel hasn’t commented but has previously vowed to eliminate the group’s leaders.<br /> <br />The killing, which came just hours after an Israeli strike on a Hezbollah commander in Lebanon, has heightened fears of wider conflict in the Middle East.<br /> <br />It could also delay efforts to bring a ceasefire in Gaza, as Haniyeh was a key player in negotiations.
