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MediumI Geo-Economics & Chokepoints9 September 2026, Wednesday

Azerbaijan and Armenia agree to delimit their border from north to south, but construction of the TRIPP corridor slips to 2027

According to Bayramov, delimitation will begin at the Azerbaijan–Armenia–Georgia tripoint. Work on the 42 km TRIPP route that will link Nakhchivan to the mainland is not expected to begin before 2027.

ZANGEZUR / SYUNIK

According to Azerbaijani Foreign Minister Jeyhun Bayramov, the two countries agreed on 9 September 2026 to delimit the border from north to south, starting from the point where the borders of Azerbaijan, Armenia and Georgia meet. According to a PanARMENIAN report carried by Eurasia Review, Sargis Khandanyan, chair of the Armenian parliament's Foreign Relations Committee, said partial delimitation could be carried out along the sections the railway will cross. Pashinyan also stated that the border would be formally finalised wherever delimitation is completed. According to the Mirror-Spectator, US chargé d'affaires David Allen and Deputy Foreign Minister Elnur Mammadov discussed the implementation of TRIPP in Baku on 8 September.

According to the same source, Bayramov said construction of TRIPP (the Trump Route for International Peace and Prosperity), which will link mainland Azerbaijan to Nakhchivan and run for about 42 km through Armenian territory, would not start before 2027. The start had originally been planned for the end of 2026. Armenia insists on preserving its sovereignty, while Azerbaijan wants unimpeded passage for its citizens and vehicles. The framework agreement of early 2026 gives the US a controlling share in the project. As the route will connect to Türkiye's rail and road network, the delay also pushes back the timetable for the Caucasus leg of the Middle Corridor. The peace agreement was initialled in August 2025 but has not yet been signed.

Talay assessment

Bottom line

The agreement to delimit the border from north to south shows the peace process initialled in August 2025 advancing technically; but TRIPP slipping to 2027 and the sovereignty dispute over the transit regime indicate the process will remain slow. The most likely path is gradual progress with partial delimitation along the railway route, while signing of the peace treaty is delayed depending on the political calendar.

Likely effects

  • South Caucasus stabilityPositive6 months+

    Starting delimitation from the tripoint and formalising completed sections is a concrete confidence-building step that reduces the risk of conflict.

  • Türkiye and the Middle CorridorNegative1–6 months

    Delay to the line that will link Nakhchivan to the Azerbaijani mainland and connect to Türkiye's rail and road network postpones the Caucasus leg of the Middle Corridor and Türkiye's expectations of transit revenue and connectivity.

  • Regional balance of powerUncertain6 months+

    The early-2026 framework agreement giving the US a controlling share in the project gives Washington a lasting economic and political presence in the South Caucasus, relatively limiting the influence of Russia and Iran.

Possibilities, ranked

  1. 1
    Gradual progress, unsigned treaty70%

    Partial delimitation along the railway route advances and TRIPP construction waits until 2027; the peace treaty remains initialled only.

    Watch: The border commission announcing the first finalised section and new statements on the TRIPP construction timetable

  2. 2
    Peace treaty signed15%

    With US mediation the peace treaty is signed, the transit regime dispute is resolved through a formula and the TRIPP timetable becomes clear.

    Watch: Announcement of a date for a signing ceremony for the peace treaty

  3. 3
    Deadlock over the transit regime15%

    Armenia's emphasis on sovereignty and Azerbaijan's demand for unimpeded passage cannot be reconciled; the technical process slows and rhetoric hardens.

    Watch: Mutually accusatory statements on the transit regime and postponed border commission meetings

Probabilities are calibrated judgement based on the sources, not measurement, and are revised as new information arrives. Not investment advice.

Sources

  1. Eurasia Review (PanARMENIAN) — Armenia, Azerbaijan Could Delimit Border Along TRIPP Route
  2. The Armenian Mirror-Spectator — Start Date for TRIPP Connecting Armenia and Azerbaijan Pushed Back
  3. GlobalSecurity (RFE/RL) — US Congressman Hamadeh: Armenia-Azerbaijan Peace Deal Could Come Before Trump's Term Ends