Tim Weiner’s Legacy of Ashes, his history of the triumphs and tragedies of the Central Intelligence Agency, continues to garner accolades, having been named a nonfiction finalist for The National Book Critics Circle Award on Saturday in San Francisco. We last talked about Weiner, a DC-based reporter for The New York Times, when he won the National Book Award for Legacy of Ashes in November. Other nominees for this award include the ever-prolific Joyce Carol…