What is landlocked country?

A landlocked country is a country that does not have territory connected to an ocean or whose coastlines lie on endorheic basins. There are currently 44 landlocked countries and 4 landlocked de facto states.

 

A country is "doubly landlocked" or "double-landlocked" when it is surrounded only by landlocked countries (i.e. requiring the crossing of at least two national borders to reach a coastline). 

Liechtenstein and Uzbekistan are two doubly landlocked countries.

Ref: https://en.wikipedia.org/wiki/Landlocked_country

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