This article makes it sound like Cooper beseeched Libby to grant a waiver when the fact is that Libby (like Rove) voluntarily signed waivers right off the bat.
Cooper was first subpoenaed to testify about Libby and refused despite the waiver (a little factoid omitted from this article). He in fact was held in contempt then and then cut a deal to give the Libby only testimony.
After he granted that the grand jury wanted the additional notes and testimony (which included the Rove conversation). Again he refused despite a long-standing waiver from Rove and again he was held in contempt until the 11th hour when he again agreed to grant the testimony after all and hence avoided jail.
OK, but still it seems that Cooper was able to avoid jail by cooperating with Fitzgerald on Rove and Libby. what I do not understand, is if indeed Fitzgerald is trying to widen the scope of this beyond Rove & Libby, why doesn't he press Cooper to identify all his sources? the precedent of jailing Miller is there for non-cooperation.
This is why I am having my doubts about Fitzgerald, what he really is after.