More than 6.3 million Ukrainians have fled their country since Russia first invaded in late February 2022. The European Union has welcomed Ukrainian refugees, allowing them to enter its 27 member countries without visas and live and work there for up to three years. Every day, Europeans have also opened their doors – and pockets – to host Ukrainians and help them find daycare, for example, and other services. But there is still an uncomfortable reality: Ukrainian refugees are also Russian President Vladimir Putin’s political pawns, intended to politically destabilize the European Union and the North Atlantic Treaty Organization. Many...