Also included in the Factbook are entries on parts of the world whose status has not yet been resolved (e.g., West Bank, Spratly Islands). Specific regions within a country or areas in dispute among countries are not covered.

What do you mean when you say that a country is "doubly landlocked"?

A doubly landlocked country is one that is separated from an ocean or an ocean-accessible sea by two intervening countries. Uzbekistan and Liechtenstein are the only countries that fit this definition.

Why is the area of the United States described as "slightly larger than China" in the Factbook , while other sources list China as larger in area than the United States?

It all depends on whether one is looking at total area (land and water) when making the comparison (which is the criterion used by the Factbook) or just land area (which excludes inland water features such as rivers and lakes).

Total area (combining land and water)

United States = 9,826,630 sq km
China = 9,596,960 sq km

Land only (without any water features)

United States = 9,161,923 sq km
China = 9,326,410 sq km

Why has The World Factbook dropped the four French departments of
Guadeloupe, Martinique, Reunion, and French Guiana?