Europe has proved helpless and hapless in defending itself and its values in the absence of American leadership. Mr. Putin’s plan of divide and conquer has worked well in Europe, where national interests always trump the EU’s toothless institution. The U.S. needs nothing from Russia other than for Mr. Putin to cease his global campaigns of invasion, assassination, hacking and election interference. Since he won’t stop until he’s stopped, save time and effort and just ask him over Zoom if you must ask at all. I’m afraid that divide and conquer may also apply to the Biden administration, where appeasers like Obama alumni John Kerry prefer stagecraft over statecraft. The West may summon the nerve to crack down hard on Mr. Lukashenko over the Ryanair hijacking. I wouldn’t feel safe flying over Russian airspace if Belarus isn’t punished severely, if even then. And until Mr. Protasevich is released, no dissident should feel safe anywhere.