I know, but the sheeple are seeing it as tit-for-tat. It's much better tactically, IMHO, to label Clarke as spinning wildly, and his case as insubstantial. Branding him a liar allows him to play the victim and distract from the weakness of his claims.
1. Law. The deliberate, willful giving of false, misleading, or incomplete testimony under oath.
2. The breach of an oath or promise.