A powerful rival to Iranian President Mahmoud Ahmadinejad became speaker of Iran's parliament today, clearing the way for a potential challenge against the hard-line head of state ahead of 2009 presidential elections... ...Many analysts say the differences between Larijani and Ahmadinejad have more to do with style than substance. Larijani, who won his parliamentary seat as a representative of the shrine city of Qom, hails from an elite religious family. Ahmadinejad is a blacksmith's son who fought as a member of the Islamic Revolutionary Guard in the Iran-Iraq war. Nonetheless European diplomats who have dealt with Larijani on the nuclear...