On 17 September 1991 , Lithuania was admitted to the United Nations .
On 31 July 1991 , Soviet paramilitaries killed seven Lithuanian border guards on the Belarusian border in what became known as the Medininkai Massacre .
On 17 September 1991 , Lithuanian was admitted to the United Nations .
On 31 July 1991 , Soviet paramilitaries killed seven Lithuanian border guards on the Belarusian border in what became known as the Medininkai Massacre .