The rule of law in EU law refers to the principle that the European Union and its member states must operate within a transparent, accountable, and democratic legal framework, which safeguards fundamental rights, ensures legal certainty, and prevents the arbitrary exercise of power. Essentially, EU institutions, governments, and citizens must adhere to a set of laws established fairly and enforced consistently. This principle is enshrined in the Treaty on European Union (Article 2) and serves as a cornerstone of the EU's democratic values.