The cascade of embarrassing disclosures is not expected to upend one of President
But the documents leaked by former
The greatest damage, officials warn, may be with U.S. relations with Germany, where outrage followed reports that the NSA secretly monitored Chancellor
In a sign of a potential backlash, some European officials have begun demanding that the
Without the commercial agreement, U.S. firms would face lengthy and costly delays in doing business in Europe. U.S. officials say Safe Harbor is not related to the spying scandal, but they are wary of the growing political fallout amid warnings that trust has been broken.
"For ambitious and complex negotiations to succeed, there needs to be trust among the negotiating partners," Viviane Reding, the European Union justice commissioner, said in a speech Wednesday at Yale University.
In the latest disclosure, the
The report prompted Sen.
According to documents provided by Snowden, in the 30 days prior to Jan. 9, the NSA collected and processed more than 181 million electronic records — email addresses and text, audio and video files — siphoned from the Google and Yahoo networks. It's unclear how many belong to Americans.
The paper said the NSA conducts the electronic espionage program, code-named Muscular, with its British counterpart, the GCHQ. The two spy services use undisclosed interception points to secretly copy data flowing through fiber-optic cables that girdle the globe.
Vanee' Vines, an NSA spokeswoman, did not deny the existence of the operation but said the "assertion that we collect vast quantities of U.S. persons' data from this type of collection is … not true." Noting that the NSA is chartered as a foreign intelligence agency, she said that "we're focused on discovering and developing intelligence about valid foreign intelligence targets only."
The NSA can access user accounts at Internet companies based on U.S. soil under a separate program, known as Prism, that is reviewed and approved by federal judges on the Foreign Intelligence Surveillance Court. The court allows the NSA to spy on foreigners, as well as on U.S. citizens suspected of terrorism or espionage.
Under Muscular, the collection takes place overseas, where the surveillance court has no jurisdiction and where U.S. law sets far fewer restrictions. Still, the disclosure creates another headache for the Obama administration. Further disclosures are expected to implicate other U.S. partners.
On Tuesday, Gen. Keith Alexander, the NSA chief, told a House hearing that spy services in France, Spain and Italy had shared more than 170 million telephone records with the NSA this year, denying that the agency had vacuumed up the data on its own. He thus spread the responsibility for the bulk collection of data that has sparked an uproar in those countries.
The finger-pointing "will not make cooperation any easier," said a European official, who spoke on condition of anonymity because of the sensitivity of the subject.
Even though U.S. officials have not implicated German spy services, Francois Heisbourg, chair of the International Institute for Strategic Studies, a London-based think tank, said Germany had been the most offended by the disclosures so far. Since it is the economic powerhouse of Europe, its reaction may matter most.
Germany is especially sensitive to government spying because of its grim history with the Nazi secret police, known as the Gestapo, and the East German secret police, called the Stasi.
The Germans "take this very seriously," Heisbourg said. "It could lead to a drifting away" from the United Sates.
German dismay was clear recently when Berlin broke with Washington and joined Brazil on a proposed
A former administration diplomat, who asked to remain anonymous because of diplomatic sensitivities, said the U.N. was "exactly the kind of forum where the United States would not like this kind of issue to be adjudicated," because of a tradition of "America-bashing."
U.S. officials say privately that they believe they can manage the issue without serious damage to relations. But, in a shift, they have been signaling this week that they intend to set new, if narrow, limits on spying on national leaders.
German and EU delegations visited the
Officials on both sides are signaling they want an agreement to limit spying, allowing the Europeans to relieve public pressure for retaliation against the United States.
"The pressure will only grow for action unless the Europeans can say at home, 'We've changed the dynamic of the relationship,'" said Heather Conley, a Europe specialist at the Center for Strategic and International Studies in Washington.