Big wars sometimes start over small stakes. For instance, Germany’s “Iron Chancellor,” Otto von Bismarck, presciently warned that a European war would begin as a result of “some damned foolish thing in the Balkans.” Soon, a royal assassination spawned World War I, which spread conflict around the globe.
National insults, trade opportunities and territorial claims also resulted in their share of stupid, counterproductive conflicts. The assertive young American republic threatened Great Britain with war over the Canadian border and launched an invasion to vindicate its dubious territorial claims against Mexico. A few decades later, the slightly more mature United States fought a lengthy counterinsurgency campaign against independence-minded Filipinos to preserve its territorial booty from the Spanish-American War.



Alliances sometimes accelerate the race to war. Assured of the support of Russia and Germany, respectively, Serbia and the Austro-Hungarian Empire were recklessly intransigent in summer 1914. Greater flexibility might not have prevented the conflict, but alliance-backed inflexibility ensured war.
History illustrates the dangers posed by the Asia-Pacific’s many territorial squabbles. None of the contested claims is worth a fight, let alone a great-power conflict. Yet they could become a spark like that in Sarajevo a century ago. Defense Secretary Jim Mattis increased the danger on his recent trip to Japan when he “reassured” the Abe government that Washington, DC was firmly in its corner.
The Senkaku Islands—called the Diaoyus by China—are uninhabited rocks of limited intrinsic value. However, they confer ocean and seabed control and corresponding fishing, navigation and hydrocarbon benefits. Nationalist sentiments loom equally large. The islands are controlled by Tokyo but also claimed by the People’s Republic of China. Beijing’s case is serious—better, in my view, than its less credible South China Sea claims—but Japan insists that there is no issue to discuss.
That leaves the PRC with little choice but to adopt more confrontational tactics to assert its “rights.” Tokyo took direct control of the Senkaku Islands in 2012 to forestall their use by nationalists for protests, which heightened tensions. The following year, China declared an Air Defense Identification Zone over the islands, though so far the ADIZ has more symbolic than real. The PRC also has engaged in fishing and oil exploration in nearby waters, sending in coast guard ships to defend Chinese operations.