Review:

Treaty Of Lisbon (2007)

overall review score: 4
score is between 0 and 5
The Treaty of Lisbon, signed in 2007 and enacted in 2009, is an international agreement that amended the constitutional basis of the European Union (EU). It aimed to enhance the EU's efficiency, streamline decision-making processes, and reinforce its global role by reforming institutional structures and extending the scope of EU policies. The treaty also introduced changes to the functioning of the EU, such as a stronger President of the European Council and a more powerful High Representative for Foreign Affairs and Security Policy.

Key Features

  • Redefinition of institutional roles and decision-making processes within the EU
  • Creation of a permanent President of the European Council
  • Establishment of the High Representative for Foreign Affairs and Security Policy with enhanced powers
  • Introduction of a double majority voting system in the Council of the European Union
  • Extension of qualified majority voting (QMV) to more policy areas
  • Simplification and codification of existing treaties into a single legal document
  • Increased transparency and democratic accountability through expanded powers for the European Parliament

Pros

  • Streamlined decision-making processes improved efficiency within the EU
  • Enhanced leadership structure provided greater stability for EU institutions
  • Strengthened role and visibility of the European Parliament
  • Expanded scope for common foreign and security policy

Cons

  • Complexity of amendments led to initial confusion among Member States and citizens
  • Some critics argued it diminished national sovereignty in favor of centralized EU authority
  • Ratification process faced political challenges, including referendums that rejected it in some countries (e.g., Ireland)
  • Limited democratic legitimacy concerns due to perceived gaps between EU institutions and public input

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Last updated: Wed, May 6, 2026, 10:17:59 PM UTC