LIMA, Peru (AP) -- When Venezuela's populist leader welcomed Bolivia's socialist president-elect at a ceremony in Caracas, an unexpected guest had a front-row seat: Ollanta Humala, a left-leaning nationalist who is surging in popularity in Peru's presidential race. Ollanta, a former army lieutenant colonel like his Venezuelan host, President Hugo Chavez, glowed in the praise he got in Caracas. But the gathering reinforced fears of Peruvian elites that he may be part of the tide of elected leftist leaders rising across South America - or, worse, a military dictator in the making. Two days later at a news conference in...