Virtually all countries have 3 letters in their names.
Afghanistan.
There are no countries that have only 3 letters.
Afghanistan.
In the Olympics, each participating country is designated by a 3-digit code. The letters SUI represent Switzerland.
BAHAMAS
Canada
The initials SLO refer to the Olympic country code for the country of Slovenia. The first three letters are used to identify a country with a unique 3 letter code. In some cases the code may not be the first three letters but a subset of letters in the country's name.
Elx is a city in Spain
The country with the letters "newsed" is Sweden.
Czech Republic is a country. It has 13 letters.
The country with the most letters in its name is the United Kingdom.
Norway is the country that contains the letters yanrwo.