Briefly, because not long after the spectacular Greek victory in Salamis, democratic Athens and oligarchic Sparta locked horns in the deadly Peloponnesian War, which lasted from 431 BC to 404 BC, devastated Athens and marked the dramatic end to the 5th century BC and the golden age of ancient Greece. The pattern should be familiar.
All of us are proud of the speed and coordination with which the Eurozone responded to the recent pandemic, not least because it was perceived as a symmetric, external shock. Few of us would be proud of the way the fallout from the Great Financial Crisis was addressed in the Eurozone, not least since its impact was asymmetric and conditioned by internal factors.