An analysis of secret documents leaked by Edward Snowden demonstrates that the NSA is more active in Germany than anywhere else in Europe — and that data collected here may have helped kill suspected terrorists.

Just before Christmas 2005, an unexpected event disrupted the work of American spies in the south-central German city of Wiesbaden. During the installation of a fiber-optic cable near the Rhine River, local workers encountered a suspicious metal object, possibly an undetonated World War II explosive. It was certainly possible: Adolf Hitler’s military had once maintained a tank repair yard in the Wiesbaden neighborhood of Mainz-Kastel.

Der Spiegel