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The Armenia–Azerbaijan border (Armenian: Ադրբեջան–Հայաստան սահման, romanized: Adrbejan–Hayastan sahman, Azerbaijani: Azərbaycan–Ermənistan sərhədi) is the international border between Armenia and Azerbaijan. Estimates of the border's length vary from 996 km (619 mi) to 1,007.1 km (625.8 mi).
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Armenia–Azerbaijan border Syunik province of Armenia Tavush–Tovuz border Gegharkunik–Kalbajar border Armenia–Nakhchivan border
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