Legal strategy or a real need?

Libby's defense team has asked to see the President's daily brief for 277 days beginning in May 2003. Any request to see classified information, particularly that which has such a high level of secrecy as the daily brief, will cause the prosecution to think more than twice about whether to grant this request or stop the prosecution. Fitzgerald thinks the request is an attempt to stop the prosecution. Libby's lawyer says it's needed for his defense. Whom do you believe?