Armenian and Azerbaijani officials said Thursday that both countries have agreed to a peace agreement set to end nearly four decades of conflict between the two post-Soviet countries. The neighboring countries have been engaged in a decades-long conflict over Nagorno-Karabakh,

The United States and the European Union were joined by other countries in commending Yerevan and Baku, which announced on Thursday that negotiations on a peace treaty had ended with both parties agreeing on the language of the document.

Armenian and Azerbaijani officials said on Thursday that they had agreed the text of a peace agreement to end nearly four decades of conflict between the South Caucasus countries, a sudden breakthrough in a fitful and often bitter peace process.