Sentence:  Very early in his administration he informed the Kremlin through diplomatic channels , a high official source <WSD>disclosed</WSD> , that the new administration would react even tougher than the Eisenhower administration would during the formative period of the administration . 
Meaning of the word marked with <WSD> tags:  make known to the public information that was previously known only to a few people or that was meant to be kept a secret