The content originally appeared on: CNN Special Presidential Envoy for Hostage Affairs Roger Carstens' quiet visit to the capital city of Caracas represents a significant development as efforts to free the men, many of whom have been imprisoned for years by the government of embattled Venezuelan leader Nicolas Maduro, have yet to succeed. 'We can confirm that the Special Presidential Envoy for Hostage Affairs Roger Carstens traveled to Caracas for discussions about the welfare and safety of US nationals in […]