Interior Minister Boston Points to 'Dangerous Phenomenon'

The Boston terrorist attack has more than just Americans worried. In a SPIEGEL ONLINE interview, German Interior Minister Hans-Peter Friedrich discusses the deadly event, calls for increased video surveillance and warns of future attacks by other lone wolves.
German Interior Minister Hans-Peter Friedrich warns of the threat of lone wolf terrorists.

German Interior Minister Hans-Peter Friedrich warns of the threat of lone wolf terrorists.

Foto: Marijan Murat/ picture alliance / dpa