Fill the World Map with City Dots Of Radius 5, with hints

Name the city that is at the exact center of each circle you see on the map!
Inside cities with less than 100,000 inhabitants there is a smaller dot: move the mouse over it to get letter hints for the answer

If you want to know how they were chosen: put a circle of radius 5 at the location of the world's largest city. Now put one for the next largest city that doesn't touch the circle you already placed. Keep going, making sure no previously placed circle is touched!