Nearly a year out from the Sept. 11 terrorist attack on the U.S. consulate in Benghazi, Libya, that killed four Americans, CNN’s Jake Tapper unveiled what looks like an enormous puzzle piece that’s been missing from the “phony scandal.” On today’s episode of “The Lead,” sources told CNN that dozens of people working for the CIA — the agency that ran the annex — were in Benghazi that night, and survivors are reportedly undergoing monthly polygraphs to ensure whatever they were doing there remains secret.

Former Secretary of State Hillary Clinton might have trouble recalling things now and then, but Tapper remembers a question put to her by Sen. Rand Paul during the infamous “what difference does it make” hearing.

There’s little question there’s a massive, ongoing cover-up in progress: the question now is whether it’s motivated more by national security or by politics.

Tapper does seems to be ticking off just the right people with his pesky questions.

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Update: Jake Tapper’s not the only one reminded of that exchange between Hillary Clinton and Sen. Paul.