Sentence:  Khrushchev , for all his bombastic prophecies about the inevitable decay of capitalism , is genuinely favorable to `` peaceful coexistence '' and would like , above all , the Berlin and German problems to be settled peacefully ; he <WSD>knows</WSD> that he was never more popular than at the time of the Russo-American `` honeymoon '' of 1959 . 
Meaning of the word marked with <WSD> tags:  be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about