The United States was labelled a rogue superpower yesterday by a group of artists and intellectuals opposed to military action against Iraq. "Not just a rogue nation, but a rogue superpower," author Linda McQuaig said at a press conference yesterday. A letter, signed by about 100 people -- including Margaret Atwood, Pierre Berton, Bruce Cockburn and Senator Doug Roche -- states they are opposed to a military attack on Iraq. "The Americans are demanding we legalize aggression," said Osgoode Hall law professor Michael Mandel, also one of the signatories. The group hopes the letter will spur the prime minister to...