German Chancellor Angela Merkel's government Monday announced a probe into ties between its secret services and US agencies whose sweeping online surveillance was revealed by fugitive intelligence analyst Edward Snowden.
German Interior Minister Hans-Peter Friedrich said he expected "straight talk" at high-level meetings in Washington Thursday on a simmering dispute over broad state surveillance.
Chancellor Angela Merkel has rejected comparisons between US government spying and the secret police of the former East Germany. In an interview she defends the German secret service, as well as the practice of intercepting data.
Chancellor Angela Merkel confirmed German secret services profited from the spying and tapping operations of their USA colleagues. But whistleblower Edward Snowden says the extent of the cooperation was hidden from politicians.
Germany reacted furiously to US spy allegations which risk becoming a political hot potato for Chancellor Angela Merkel less than three months from elections.
German Chancellor Angela Merkel says she will tackle US President Barack Obama on the scale of American online surveillance, and call for "transparency" on its scope as she hosts him in Berlin this week.
The White House on Friday sought to cool German fears over a secret US Internet surveillance program, which threatens to detract from President Barack Obama's visit to Berlin next week.
The German government said Tuesday it planned to send a list of questions to the US administration over revelations that Washington is running a worldwide internet surveillance programme.