Armenia and Azerbaijan have finalized the text of a peace agreement, marking a breakthrough in efforts to end nearly four decades of hostilities over Nagorno-Karabakh. Both countries confirmed on Thursday that

But hurdles remain. Azerbaijan also said Armenia’s constitution must “eliminate the claims against the sovereignty and territorial integrity of Azerbaijan,” as a prerequisite to allow for the signing of the peace treaty.

Armenia and Azerbaijan were locked in conflict over Nagorno-Karabakh for nearly four decades after the Soviet Union they were both members of collapsed.

Armenia and The Azerbaijan Republic have reached an agreement on a peace treaty, marking a significant step toward ending nearly four decades of conflict between the two former Soviet republics, officials from both countries announced on Thursday.

The European Union says conclusion of Azerbaijan and Armenia talks and agreement on the text of a possible treaty, "a decisive step."

Armenian Prime Minister Nikol Pashinyan (left) and Azerbaijani President Ilham Aliyev speak at the BRICS summit in Russia in October 2024. The two sides announced on March 13, 2025, that the text of the peace agreement between them has been finalized, but it is unclear when, or even if, it will be signed. (Photo: Ramil Sitdikov/brics-russia2024.ru)

Iran has welcomed the announcement of a potential peace agreement between Armenia and The Azerbaijan Republic, aiming to end nearly four decades of conflict.

Armenia and Azerbaijan were locked in conflict over Nagorno-Karabakh for nearly four decades after the Soviet Union they were both members of collapsed.Here is a look at the history of the conflict and the latest developments as Armenian and Azerbaijani officials said on Thursday that they had agreed the text of a peace agreement.

Armenia and Azerbaijan have fought a series of wars since the late 1980s, when Nagorno-Karabakh, a region in Azerbaijan that had a mostly Armenian population at the time, broke away from Baku with Yerevan's support.