France’s campaign in Mali exposes Europe’s unpreparedness for 21st-century war. WITH WELL-ARMED radical Islamist insurgents closing in last winter on Mali’s capital, Bamako, French President François Hollande suddenly decided to defend Western civilization. Plunging in the polls as the most unpopular French president since the Fifth Republic was founded in 1958, he just might have had ulterior motives; diverting hostile public opinion at home with a military escapade abroad is a tried and true tactic for floundering chiefs of state. Be that as it may, French troops, mainly Foreign Legion, began deploying to Mali in Operation Serval on January 11....