Hardline prosecutor emerges as main challenger to Iran's Rouhani

By Bozorgmehr SharafedinLONDON (Reuters) - Hardline cleric Ebrahim Raisi, seen as pragmatist President Hassan Rouhani's main challenger in a May 19 election, is a close ally of Iran's supreme leader and despises the West.Raisi is a mid-ranking figure in the hierarchy of Iran's Shi'ite Muslim clergy but has been a senior official for decades in the judiciary which enforces clerical control of the country.The former prosecutor-general may struggle for recognition among voters, though analysts say