Over the last 20 years, some financial events, such as devaluations or defaults, have triggered an immediate adverse chain reaction in other countries -- which we call fast and furious contagion. Yet, on other occasions, similar events have failed to trigger any immediate international reaction....

Newly developed long historical time series on public debt, along with modern data on external debts, allow a deeper analysis of the cycles underlying serial debt and banking crises. The evidence confirms a strong link between banking crises and sovereign default across the economic history of...