As the coronavirus claims lives, ruins livelihoods and wreaks economic havoc, tensions are rising between European Union countries over how best to respond as the pandemic overwhelms some member nations, once more raising troubling questions about the EU’s ability to stand united in times of crisis. Almost 16,000 people infected with the virus have died in Europe. Over a quarter of a million had tested positive, as of Friday. Countries hit especially hard, like Italy and Spain, are imploring their partners to do more, particularly on the economic front, and to do it now. “The consequences of COVID-19 should be...