It is exactly 21 years since the Orange Revolution in Ukraine, when citizens rose up to challenge the result of an election scarred by corruption, fraud, vote-rigging and the mysterious poisoning of the main reformist candidate. This uprising is widely seen as a failure since it led to a dismal and divided government, followed by the election six years later of the chief villain Viktor Yanukovych. And it was this creep’s later attempt to return the country into Kremlin arms that sparked new protests, the annexation of Crimea and start of the grisly war that still torments our continent. Yet...