Interview: 'Guerilla war' in Afghanistan

Interview: 'Guerilla war' in Afghanistan: "Rolf Tophoven, the director of the Institute for Terrorism Research and Security Policy and Germany's most senior terrorism expert, spent a week in Afghanistan talking to NATO troops and intelligence officers to analyze the security situation on the ground. United Press International's Berlin Correspondent Stefan Nicola spoke to Tophoven about the situation of the roughly 4,000 German Bundeswehr troops in northern Afghanistan, where security has deteriorated drastically over the past year. First of two parts."