China’s definition of what constitutes its “core interest” appears to be spreading. Such interests used to be confined to a few areas, about which the Communist party would brook absolutely no dissenting view. These included its national security, national sovereignty and territorial integrity.

Tibet, where there is a strong separatist element, quite obviously forms part of China’s definition of territorial integrity. So does the island of Taiwan, ceded to Japan in 1895, and now a self-governed democracy. Beijing has made clear that, if Taiwan were ever to declare formal independence, it would invade. More recently, the term has been applied to Xinjiang, the huge area of western China that has been the scene of clashes between local Muslims and Han Chinese. Read more