https://vocabularyserver.com/thema/en/https://vocabularyserver.com/thema/en/xml.php?skosTema=406Peace studies & conflict resolution https://vocabularyserver.com/thema/en/xml.php?skosTema=406 Interdisciplinary studies BT https://vocabularyserver.com/thema/en/xml.php?skosTema=406 Peacekeeping operations RT