Lithuania is part of the United Nations.
Lithuania ( UK and US : [ lɪθuː ` eɪniə ] , Lietuva [ lʲɪɛtʊˈvɐ ] ) , officially the Republic of Lithuania ( [ Lietuvos Respublika , links = no ] ) , is a country in Northern Europe . Lithuania is a member of the European Union , the Council of Europe , a full member of the Eurozone , Schengen Agreement and NATO . The United Nations Human Development Index lists Lithuania as a `` very high human development '' country .