Alternative to  properly sourcing is credibility of the author.<p>When quality newspaper or journalist releases important article with anonymous sources, they rely on their credibility.<p>It&#x27;s the same for diplomatic communication. Important sources don&#x27;t want to end in government papers. They are named only in classified memos. Requiring sources and suspecting employees faking it is not the way to go. If the suspicion arises, people are called back.