New geek wars may leave computers encrypted to the teeth but no better protected against gov't snoops.

Says foreign colleagues have been understanding about revelations.

Advocacy comes in face of growing efforts in Congress to shut down the program.

Report says National Security Agency has tapped communications links that connect data centers.

The White House is considering ending eavesdropping on friendly foreign leaders, a senior administration official said.

Faced with a flood of revelations about U.S. spying practices, the White House is considering ending its eavesdropping on friendly heads of state, a senior administration official said.

Hopes to pressure U.S. to give details of past surveillance.

Will talk with U.S. officials about the spying allegations that have so angered Europe.

Western diplomats say U.S. officials have briefed them on documents obtained by Snowden that might expose intelligence ops of their countries.

U.S. allies knew they were being spyed on, but had no idea how much.