John F. Kennedy had a Russian back channel.

On a day in early December, one of Moscow’s agents in the United States, working undercover as a journalist for Izvestia, reported a private meeting with the president-elect’s “closest adviser.” The adviser, who met privately with the Russian spy, was frank and hopeful about a significant improvement in relations from the previous administration. He “stressed that was not merely expressing his personal opinion but the position of the future president.” The two men met alone, and there was no American record made of the encounter.

Source: John F. Kennedy had a Russian back channel.