
https://www.eia.gov/energyexplained/us-energy-facts/imports-and-exports.php

https://www.mfat.govt.nz/en/media-and-resources/joint-ministerial-statement-on-conclusion-of-negotiations-for-the-agreement-on-climate-change-trade-and-sustainability

http://www.japantimes.co.jp/opinion/2017/05/15/commentary/world-commentary/france-great-britain-unbeatable-combination/#.WTqNinm1s2x