“The fate of Ukraine and the fate of Belarus are interconnected,” says Svetlana Tikhanovskaya, the opposition leader whose victory in the 2020 election in Belarus was stolen out from under her by strongman Alexander Lukashenko. She is so right. Mr. Lukashenko has now become a satrap of Russian President Vladimir Putin, permitting Russian troops to use Belarus as a launchpad for the war against Ukraine. Democracy in both Belarus and Ukraine must be saved from being trampled by the heavy boots of Mr. Putin and Mr. Lukashenko.