Top US intelligence officials are belittling WikiLeaks founder Julian Assange, saying his work has put American lives at risk.
National Intelligence Director James Clapper told Congress on Thursday he believed Assange was responsible for the publication of names which put lives in danger.
He did not elaborate.
WikiLeaks immediately responded on Twitter by accusing Clapper of lying to Congress.
Wikileaks has been under criminal investigation for its role in leaks of classified information.
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Senator John McCain is chairman of the Senate Armed Services Committee. At a committee hearing, McCain asked Clapper whether Assange has any credibility.
Clapper said "No," and his assessment was seconded by Admiral Mike Rogers, director of the National Security Agency.
