FOR 30 years, the tradition has been for each newly elected president of the Is lamic Republic to travel at once to Mashad, Iran's main "holy" city, to thank Ali bin Mussa, the only one of Shiism's 12 imams buried in Iranian soil. But Ahmadinejad was forced at the last minute to scrub the trip. Angry Mashadis, many of whom believe Ahmadinejad stole the election, were determined to give him a rough reception. Despite the presence of some 15,000 Basij security men in the city, the authorities couldn't guarantee the president's safety -- let alone deliver the enthusiastic, welcoming crowds that he requires for propaganda purposes. The canceled pilgrimage is the latest sign of trouble in the wake of Ahmadinejad's controversial re-election. - NY POST.com