Please visit the page of the European External Action Service – EEAS at  https://www.eeas.europa.eu/_en

The European External Action Service (EEAS) is the European Union’s diplomatic service. Since 2011, the EEAS carries out the EU’s Common Foreign and Security Policy to promote peace, prosperity, security, and the interests of Europeans across the globe. The EEAS works under the political guidance of the High Representative of the Union for Foreign Affairs and Security Policy and Vice-President of the European Commission (often referred to as HR/VP).  A  strong asset of the EEAS is its ability to work closely with the foreign and defence ministries of the member states of the European Union (EU) as well as with the EU institutions such as the European Commission, the European Council and the European Parliament. It also has a strong working relationship with the United Nations and other international and multilateral Organisations.

Especially relevant for us are  the EEAS pages about the Western Balkans.

 The Western Balkans are at the heart of Europe, geographically surrounded by EU Member States. The EU accession process is at the centre of EU-Western Balkans relations. As High Representative/Vice-President Josep Borrell said, “The European Union is not complete without the Western Balkans”. https://www.eeas.europa.eu/eeas/western-balkans_en

List of the country delegations to the Western Balkans