Henry Kissinger was Nelson Rockefeller's foreign policy advisor.
"Keen to have a greater influence on U.S. foreign policy, Kissinger became foreign policy advisor to the presidential campaigns of Nelson Rockefeller, supporting his bids for the Republican nomination in 1960, 1964, and 1968.[27] After Richard Nixon won the presidency in 1968, he made Kissinger National Security Advisor."
https://en.wikipedia.org/wiki/Henry_Kissinger