Pursuant to Article 21 of the Treaty on European Union (TEU), the Union's action on the international scene is to be guided by the principles which have inspired its own creation, development and enlargement, and which it seeks to advance in the wider world, namely democracy, the rule of law, the universality and indivisibility of human rights and fundamental freedoms, respect for human dignity, the principle of equality and solidarity, and respect for the principles of the United Nations Charter and international law.
Ba cheart, de bhun Airteagal 21 den Chonradh ar an Aontas Eorpach (CAE), tá gníomhaíocht an Aontais ar an ardán idirnáisiúnta le bunú ar na prionsabail a spreag a chruthú, a fhorbairt agus an méadú a tháinig air, prionsabail a bhféachann sé lena gcur ar aghaidh sa domhan mór: an daonlathas, an smacht reachta, uilechoitinne agus dodhealaitheacht chearta an duine agus na saoirsí bunúsacha, an meas ar dhínit an duine, prionsabail an chomhionannais agus na dlúthpháirtíochta, agus an meas ar phrionsabail Chairt na Náisiún Aontaithe agus ar phrionsabail an dlí idirnáisiúnta.