Sentence:  Another speaker , William H. Draper , Jr. , former Under Secretary of the Army and now with the Palo Alto venture capital firm of Draper , Gaither + Anderson , urged the U. S. to `` throw down the gauntlet of battle to communism and <WSD>tell</WSD> Moscow bluntly we won n't be pushed arouny any more '' . 
Meaning of the word marked with <WSD> tags:  let something be known