This 6th edition of the International Index of Energy Security Risk (International Index) provides an updated look at energy security risks across different countries from 1980 through 2018. The risk index scores are calculated for the United States and 24 other countries that make up the International Index’s large energy user group. These countries are: Australia, Brazil, Canada, China, Denmark, France, Germany, India, Indonesia, Italy, Japan, Mexico, Netherlands, New Zealand, Norway, Poland, Russian Federation, South Africa, South Korea, Spain, Thailand, Turkey, Ukraine, and the United Kingdom.