Globalization is generating tremendous new connections among the four Atlantic continents-North and South America, Africa, and Europe. But as growing Atlantic interdependencies spawn new opportunities, they are also generating new vulnerabilities, requiring mutual efforts to promote human security across the region. The drug trade, flows of arms and money, human trafficking, piracy, political instability, and terrorist infiltration are not only becoming concerns of pan-Atlantic scope. In many cases, they are interacting, fueled by the growing engagement in the region of both traditional and new nonregional players and the relative absence of effective governance or enforcement mechanisms. These "dark networks” pose pan-Atlantic challenges that require pan-Atlantic answers. In this volume authors from the four Atlantic continents explain the nature of these networks and recommend how to best cope with the challenges they present. Contributors include Nancy E. Brune (Los Alamos Labs and Center for New American Security), Charlie Edwards (Royal United Services Institute), Armando Marques-Guedes (Universidade Nova de Lisboa), Laurence Cockcroft (Transparency International), Stephen Ellis (Leiden University), Martin Uadiale (Benson Idahosa University, Nigeria), and Vanda Felbab-Brown (Brookings Institution).