Recently, Jack sent me this link to a Forbes article that purports to list the 25 smartest countries. I have no idea why someone chose to make this ranking, nor do I know how or why they chose the criteria they used.
The list includes no countries from Africa, Central America, South America, or the Middle East (other than Israel).
From the link (a 26-slide show :( to maximize ad revenues?) there is little explanation of which criteria are used and no description of the weights used.
For a many but not all of the countries, the article lists average IQs, which I have copied and rearranged in the list below. I know IQ is not a perfect measure of intelligence. Also, it bears repeating that averages say nothing about any individual resident.