After accounts of a confidential congressional hearing on a national security matter were published, the chief counsel at the hearing made a statement to a major newspaper accusing a popular network news anchorman of leaking the story and endangering national security. The network immediately fired the anchorman. When facts came to light a few weeks later showing that the allegation was not true, the anchorman was rehired and restored to his position. The anchorman sued the newspaper for defamation, claiming compensatory and punitive damages, and made allegations legally sufficient to sustain those damages if proved. No affirmative defenses were allowed. What is the newspaper's best defense?