1. Yuval Noah Harari, Homo Deus: A Brief History of Tomorrow (New York: Harper Collins, 2017), 14–19; ‘Global Health Observatory Data Repository, 2012’, World Health Organization,http://apps.who.int/gho/data/node.main. RCODWORLD?lang=en, accessed 16 August 2015; ‘Global Study on Homicide, 2013’, UNDOC, http://www.unodc.org/documents/gsh/pdfs/2014_GLOBAL_HOMICIDE_BOOK_web.pdf; accessed 16 August 2015; http://www.who.int/healthinfo/global_burden_disease/estimates/en/index1.html.
2. ‘World Military Spending: Increases in the USA and Europe, Decreases in Oil Exporting Countries’, Stockholm International Peace Research Institute, 24 April 2017, https://www.sipri.org/media/press-release/2017/world-military-spending-increases-usa-and-europe, accessed October 23, 2017.
3. http://www.nationalarchives.gov.uk/battles/egypt/popup/telel4.htm.
4. Spencer C.Tucker (ed.), The Encyclopedia of the Mexican-American War: A Political, Social and Military History (Santa Barbara: ABC-CLIO, 2013), 131.
5. Ivana Kottasova, ‘Putin Meets Xi: Two Economies, Only One to Envy’, CNN, 2 July 2017, http://money.cnn.com/2017/07/02/news/economy/china-russia-putin-xi-meeting/index.html, accessed 23 October 2017.
6. GDP数据参考国际货币基金组织（IMF）统计数据，根据购买力平价来计算：International Monetary Fund, ‘Report for Selected Countries and Subjects,2017’, https://www.imf.org/external/pubs/ft/weo/2017/02/weodata/index.aspx, accessed 27 February 2018.
7. http://www.businessinsider.com/isis-making-50–million-a-month-from-oil-sales-2015–10.
8. Ian Buruma, Inventing Japan (London: Weidenfeld & Nicolson, 2003); Eri Hotta, Japan 1941: Countdown to Infamy (London: Vintage, 2014).
