Henry Alfred Kissinger turned one hundred on May 27 of this year. Once a teenage refugee from Nazi Germany, for many decades an adviser to presidents, and an avatar of American realpolitik, he’s managed to reach the century mark while still evidently retaining all his marbles. That those marbles remain hard and cold is no surprise.

A couple of months after that hundredth birthday, he traveled to China, as he had first done secretly in 1971 when he was still President Richard Nixon’s national security adviser. There — in contrast to the tepid reception recently given to US officials like Treasury Secretary Janet Yellen and Special Presidential Envoy for Climate John Kerry — Kissinger was welcomed with full honors by Chinese president Xi Jinping and other dignitaries.

“That ‘lovefest,’” as Daniel Drezner of the Fletcher School of Law and Diplomacy wrote in Politico, “served the interests of both parties.” For China, it was a signal that the United States would be better off pursuing the warm-embrace policy initiated so long ago by Nixon at Kissinger’s behest, rather than the cold shoulder more recent administrations have offered. For Kissinger, as Drezner put it, “the visit represents an opportunity to do what he has been trying to do ever since he left public office: maintain his relevancy and influence.”