Armenia–Iran border
The Armenia–Iran border (Armenian: Հայաստան–Իրան սահման, romanized: Hayastan–Iran sahman, Persian: مرز ارمنستان-ایران) is 44 km (27 mi) in length and runs from the tripoint with Azerbaijan’s Nakhchivan region in the west to the tripoint with Azerbaijan proper in the east. The border was protected by guards of the Russian Federal Security Service from 1992 until 2025. The border has been protected by the Armenian Border Guard Service since 2025. On 9 May 2024, Russian Presidential spokesman Dmitry Peskov announced that Russian border guards will continue to serve on Armenia's borders with Iran and Turkey, at the request of the Armenian side. On 8 October 2024, Armenian prime minister's spokesperson Nazeli Baghdasaryan announced that the Armenian border guard troops will participate in protecting Armenia's borders with Iran and Turkey, together with the Russian border guard troops, starting from 1 January 2025.