The security of U.S. borders has become one of the key issues in the U.S. Presidential race.  Some of the Republican candidates support building a fence along the border with Mexico to stop illegal immigrants, drug smugglers and possibly even terrorists from entering the country. General John Kelly worries that ...

In 1915, the British poet Thomas Hardy wrote a short masterpiece about the sinking of Titanic, which had occurred several years earlier. He describes the long string of separate events by which both the ship and the iceberg are formed – one in a shipyard and the other in the ...

The convergence of ruthless terrorist networks and greedy criminal underworld operatives can pose unique and dangerous challenges. It offers terrorists access to human resources and skillsets that can enhance their operational capabilities, while it offers criminals new sources of profit and political rationalization. But convergence also entails risks for both terrorist ...

The Cipher Brief spoke with the DEA's former Chief of International Operations, Mike Vigil to discuss the threat of convergence. The Cipher Brief: Convergence is the idea that unrelated adversaries —for example, drug dealers and terrorists — could find common cause and cooperate and share resources. Do you think convergence ...