Mohammad Bagher Ghalibaf, Iran’s parliament speaker and a veteran of the Revolutionary Guards, has emerged as the highest-profile political figure in the Islamic Republic after the killing of its leaders.A pillar of the Iranian establishment for some three decades and one of the Islamic republic’s most prominent non-clerical figures, Ghalibaf, 64, now appears to be playing a key role spearheading the war effort.Whereas the son and successor of slain Supreme Leader Ali Khamenei, Mojtaba...