On 27 September 2020, a new war erupted in Nagorno-Karabakh and the surrounding territories, which saw both the armed forces of Azerbaijan and Armenia report military and civilian casualties. Azerbaijan made significant gains during the war, regaining most of the occupied territories surrounding Nagorno-Karabakh and large parts of Nagorno-Karabakh, including the culturally significant city of Shusha. The war ended on 10 November 2020, when a trilateral ceasefire agreement was signed between Azerbaijan, Armenia and Russia, which forced Armenia to return all the remaining occupied territories surrounding Nagorno-Karabakh.