Does leaking secrets damage national security?

From NPR

Last week's assignment of two federal prosecutors to investigate disclosures of national security information might have been the first shot in a new war on leaks. The director of national intelligence is expected soon to announce new measures to fight unauthorized disclosures, and some members of Congress say it could be time for new anti-leaking laws.

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But advocates of open government fear an overreaction.

"Members of Congress in both parties have adopted an extreme knee-jerk position that presumes any and all disclosure of classified information is always wrong," says Steven Aftergood, director of the Project on Government Secrecy at the Federation of American Scientists. "That just doesn't fit the experience of those of us who gather or consume news."