The intent of those who planned and carried out the recent terrorist attack in Tunisia and the reactions to it, both underscore the idiosyncratic connections between economic development and terrorism.

In a swell of glinting green canals and cobblestoned curving streets, Venice is a natural attraction. For decades, this small northern city has been a place for travel for many Italians as well as tourists from all over the world. As if for fear of a disappearing city, an estimated 47.7 million people venture to Venice a year—about 200,000 in a summer day.