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.

The United Arab Emirates has welcomed the announcement by the Republic of Azerbaijan and the Republic of Armenia on concluding peace negotiations, and expressed hope that this historic step would consolidate bridges of communication,