The idea is that the whole truth will vindicate the Bush White House.
He insists the documents will vindicate him by showing that the CIA program was vital and produced important information.
The present needs to vindicate the president, whoever he or she may be.
1620s, "to avenge or revenge," from Latin vindicatus, past participle of vindicare (see vindication). Meaning "to clear from censure or doubt, by means of demonstration" is recorded from 1630s. Related: Vindicated, vindicating.