High quality global journalism requires investment. Please share this article with others using the link below, do not cut & paste the article. See our Ts&Cs and Copyright Policy for more detail. Email ftsales.support@ft.com to buy additional rights. http://www.ft.com/cms/s/0/dbe55adc-140d-11e4-b46f-00144feabdc0.html#ixzz38uQ4ms5q Two debates are under way over China. The first, about Beijings aggression in the South and East China seas, is between naval strategists and diplomats who know little about economics.