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.

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.

Representatives of Armenia and Azerbaijan have concluded negotiations and agreed on the text of a peace agreement, the foreign ministries of both countries announced.