US secretary of state confirms report that terror group's No. 2 was killed in Tehran last year, but doesn't say whether Israel carried out hit

With unconfirmed rumors swirling over fate of Al-Zawahiri in wake of Abu Muhammad al-Masri's killing in Iran, many analysts point to Saif al-Adel as next leader

Daughter of terror group's no. 2, widow of a bin Laden, said to have been killed due to involvement in operational planning; shooting comes amid rumors about leader al-Zawahiri

The US and Israel both had 'scores to settle' with terror chief al-Masri, reportedly shot dead by Israeli agents in August; Iran now said to fear more hits in Trump's last 2 months