Tuvalu is a small country formed by a volcanic island chain that has the distinction of being one of the least populous countries in the world after Vatican City and Nauru at 10,640. Considering the Vatican is almost like a room (complete with the fact that its surrounded by walls), it says a lot. Of course, Tuvalu is also one of the smallest countries in the world, with a total land area of just 10 square miles.
They declared independence from the United Kingdom in 1978 and on September 5th, 2000, became the 189th member of the United Nations. Like Kiribati, they are very susceptible to sea level rising and passing storms, which is understandable considering the islands are less than five meters above sea level. As a result, they're one of the countries most interested in matters pertaining to climate change, since they fear their choices are "stop climate change" or "evacuate at some point in the next few centuries". It has no official military force.
Happily, Tuvalu happened to be assigned ".tv" as its internet domain name, and made a lot of money around the Turn of the Millennium by selling it to television companies who wanted .tv websites. It is served only by the Funafuti International Airport.
The Tuvaluan flag