First Nagorno-Karabakh War
However, because Armenia seized an Azerbaijani region outside the region, international society started to take action. On 30 April 1933, the United Nations Security Council adopted a resolution on the territorial dispute for the first time; the resolution called on both Armenia and Azerbaijan to stop the war, while it demanded that Armenia immediately withdraw its forces from Kelbajar. Furthermore, Turkey decided not to open the bilateral diplomatic relations in 1992 and later, closed its border with Armenia.