Britain has played a key role in NATO forward troop deployments and training exercises on Russia’s borders. With war underway, the UK sends billions in arms, special forces, and volunteers to ensure escalation. In an effort to evade his domestic woes, British Prime Minister Boris Johnson—who may soon be replaced—has spent much time toing and froing to Ukraine. Ukrainian President Volodymyr Zelenskyy has described the buffoonish British PM as one of Ukraine’s closest allies. If and when Johnson leaves office, he is tipped for a role as Ukraine Envoy. The Johnson-Zelenskyy relationship contrasts sharply with Zelenskyy’s experiences with French President...