Top US spy hits out at phone surveillance leak

WASHINGTON (AFP) - America's top spy chief James Clapper warned that leaks of secret court documents on a scheme to capture millions of phone records risked US national security.

In a statement, Clapper, the Director of National Intelligence, said on Thursday "the unauthorized disclosure of a top secret US court document threatens potentially long-lasting and irreversible harm to our ability to identify and respond to the many threats facing our nation."

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