Armenia–Georgia border

[2] By the Russo-Persian War (1804–1813) and the subsequent Treaty of Gulistan, Russia acquired the bulk of what is now Azerbaijan and the southern Syunik region of modern Armenia.

Following the 1917 Russian Revolution, the peoples of the southern Caucasus had declared the Transcaucasian Democratic Federative Republic (TDFR) in 1918 and started peace talks with the Ottomans.

[9][10] Georgia stated that the southern limits of the former Tiflis governorate should form the border, whereas Armenia said that the boundary should be redrawn so as to reflect the ethnic situation on the ground.

[10][8] A ceasefire was brokered by the British under William Montgomerie Thomson on 17 January 1919 and the disputed area was declared a neutral zone pending further peace talks.

[10] Turkey took the opportunity to wrest back lands in the east from Armenia, and Georgia occupied the Lori neutral zone with Armenian approval, so as to prevent it falling into Turkish hands.