An island country (also island nation ) is a country whose primary territory consists of one or more islands or parts of islandsFact: date=February 2009. As of 2008, forty-seven (appoximately 25%) of the world's countries are island countries.

The list of island countries, on the other hand, is a list of borderless countries.

Politics

Island countries have a higher likelihood of being democratic than continental countries, although historically they have been more prone to political instability.

War

Island countries have often been the target of maritime greed and historical rivalry between other countries. Island countries are more susceptible to attack by large, continental countries due to their size and dependence on sea lines of communication and air lines of communication. Many island nations have to put up with mercenaries and other foreign invaders.

Natural resources

Many island countries rely heavily on fish for their main supply of food. Some are turning to renewable energy—such as wind power, hydropower, geothermal power and biodiesel from copra oil—to combat the rise in oil prices.

Geography

Some island nations are more affected by climate change than other nations. Some low-lying Pacific island nations are slowly being submerged by the rising water levels of the Pacific Ocean. Climate change also impacts island countries by causing natural disasters such as tropical cyclones, flash floods and drought.

Economics

Many island countries rely heavily on imports and are greatly affected by changes in the global economy. The economies of island nations are usually smaller and more vulnerable to shipping costs, environmental damage to infrastructure, and isolation from other economies than those of larger, continental countries. The dominant industry for many island nations is tourism.

Composition

Many island countries are small with relatively low populations.

Some island countries are centered on one or two major islands, such as the United Kingdom, New Zealand, and Japan. Others are spread out over hundreds or thousands of smaller islands, such as the Philippines, Indonesia, and the Maldives. Some island countries share their islands with other countries; these include the United Kingdom and Ireland, Haiti and Dominican Republic, and Indonesia, which shares islands with Papua New Guinea, East Timor and Malaysia.