FLORENCE – “Unity of Europe is a paramount concern, as dividing us is one of the main objectives of the war waged by Russia,” declared French President Emmanuel Macron earlier this month. Macron, who has billed himself as Europe’s top leader since the departure of former German Chancellor Angela Merkel, has sought to maintain internal coherence and cohesion within the European Union (EU) while also maintaining functional communication channels with Russia amid the raging war in Ukraine. After closing ranks and displaying remarkable unity in face of Russia’s aggression earlier this year, however, cracks are beginning to appear within the...