Former Securities and Exchange Commission Chairman Harvey Pitt said it is yet to be seen whether Madoff will cooperate in the investigation.

VOA: standard.2009.03.12

But observers say there are plenty of unknowns, including whether Iran will cooperate with the tentative deal and to what extent the IAEA will be able to monitor Iran's nuclear efforts.

VOA: standard.2009.10.19

Armstrong already has had conversations with U.S. Anti-Doping Agency officials, touching off speculation that the team leader who demanded loyalty from others soon may face some very tough choices himself: whether to cooperate and name those who aided, knew about or helped cover up a sophisticated doping ring that Armstrong ran on his tour-winning U.S. Postal Service squads.

NPR: Lance Armstrong May Not Be Done Confessing

Those lawyers had asked for Clarke to join the legal team, and they must decide whether their client will cooperate with the ongoing investigation.

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They're going to feel each other out and see whether there are opportunities to cooperate.

CENTERFORSECURITYPOLICY: Misleadership