Of the 20 cities listed, Tokyo, Nagoya and Kobe are the only ones in a first-world nation, Japan. Kathmandu, Nepal tops the list with a possibility of 70,000 deaths if struck by an earthquake of 6 magnitude.
I have put together a Google Map of the cities and the number of deaths that may result as reported in the article.
Alternatively, you can click on the image to view the map


