When an aid to Khrushchev invited Salinger to Moscow , the president assented to his going .
He accompanied Kennedy to conferences with other world leaders , including the 1961 meeting with Soviet Premier Nikita Khrushchev in Vienna .
When an aid to Premier invited Salinger to Moscow , the president assented to his going .
He accompanied Kennedy to conferences with other world leaders , including the 1961 meeting with Soviet Premier Nikita Khrushchev in Vienna .