Iraq's former prime minister Iyad Allawi said gunmen tried to assassinate him in Shi'ite Islam's holiest shrine on Sunday, forcing him to cut short an election campaign visit pursued by an angry mob. "It appeared to be an assassination attempt," the secular Shi'ite said; 60-70 men in black, armed with guns and knives, set upon his small party as he prayed at the Imam Ali mosque. Police said Allawi's group was attacked by men with batons and fled the shrine under a hail of rocks, tomatoes and shoes -- the latter a mark of grave insult in Iraqi culture. Allawi,...