MEXICO CITY - (KRT) - Mexico's former Foreign Minister Jorge Castaneda, a controversial political scientist, has announced he will run for president in 2006 as an independent candidate. Castaneda, 50, was pivotal as an adviser to Vicente Fox when the conservative National Action Party (PAN) defeated the Institutional Revolutionary Party, or PRI, which had ruled Mexico since 1929. But Castaneda blasted the PAN, PRI and Mexico's other large party, the Democratic Revolutionary Party (PRD), in a Thursday night television commercial announcing his run. "There are many of us who confront a wall built by the leaderships of the three major...