The prime ministers of Sweden and Finland, Magdalena Andersson and Sanna Marin, both signaled Wednesday that they will likely be applying for membership in NATO. The "prospect" is most "welcome," says The Washington Post: "Finland and Sweden Should Join NATO." The editorial was titled "A Way to Punish Putin." Before joining the rejoicing in NATO capitals, we might inspect what NATO membership for these two Nordic nations would mean for the United States. Finland is a nation the size of Germany, but with a population only 4% of that of Russia and a border with Russia that is 830 miles...