Florida Gov. Ron DeSantis is out of the office this week. He and more than 80 state officials said “ciao” to Italy for five days during a trade mission.

The Earth's five 'Blue Zones' are regions in which residents are 10 times more likely to live to 100 than anywhere else.

One striking feature of that period, though, was that it showed Europe does take decisive action when its markets — particularly its bonds and currency — are in freefall. In that narrow sense, ...