Armenia–Azerbaijan border

Coordinates: 40°18′N 45°50′E / 40.300°N 45.833°E / 40.300; 45.833 The Armenia–Azerbaijan border is an international border running from north to south and from northwest to southeast across the Lesser Caucasus. The border spans 1007.1 km (625.78 mi), with Armenia mainly to the west and Azerbaijan to the east. The Azerbaijani exclave of the Nakhchivan Autonomous Republic borders Armenia at the north and east. The northernmost inhabited places of the Armenia–Azerbaijan border are Kamarli on Azerbaijani side and Berdavan on Armenian side. The southernmost inhabited places are Ganza and Agarak, respectively. European routes E002 and E117 cross the border.

The modern Armenia–Azerbaijan border largely follows that of the Armenian SSR and Azerbaijan SSR, but is now closed due to the ongoing Nagorno-Karabakh conflict. Azerbaijani Ministry of Foreign Affairs said it may consider reopening its border with Armenia in case of a breakthrough in the conflict.