Eliesio Marubo watched as the tribal leaders assembled before him. First came the Matses of the White River. Then the distant Kanamari. Then both factions of the Marubo people. All had come, at his request, to put aside their differences and discuss what he called a common adversary. Their forest was beset by outsiders -- illegal gold miners, land grabbers, deforesters. But the time had come to confront the one who predated them all. "Missionaries," Marubo said.