A landlocked country is a country that has no territory connected to an ocean or whose coastlines lie solely on endorheic basins. Currently, there are 44 landlocked countries, two of them doubly landlocked due to being surrounded by other landlocked nations (Liechtenstein and Uzbekistan), and three landlocked de facto states in the world. Kazakhstan is the world's largest landlocked country, Kyrgyzstan is the farthest landlocked country from any ocean, and Ethiopia is the world's most populous landlocked country.
Generally, being landlocked creates political and economic disadvantages that having access to international waters would avoid. For this reason, nations large and small throughout history have fought to gain access to open waters, even at great expense in wealth, bloodshed, and political capital.