Brazil has seen no worrisome signs in the area where its border joins those of Argentina and Paraguay, which the United States considers a region with links to activities of Islamic extremist groups, the commander of Brazil’s army said here. “We are observing the triple border. We understand that it is under control. We always have a presence there and to date we have no knowledge of anything serious,” Gen. Francisco Roberto Albuquerque said in statements published Friday by the local press. Full Story