Finnish leaders know how to have a good time, which is probably why Foreign Minister Pekka Haavisto recently sat down with Ian Bremmer to discuss Finland’s NATO accession.Threats from the Kremlin had kept Finland (and Sweden) from joining the alliance for 75 years. But the invasion of Ukraine changed all that. In May, Finland’s long-serving President Sauli Niinistö rang his old friend, Vladimir Putin. “It’s not me, it’s you,” Niinistö intimated to the Russian leader.