Review:

Lisbon Treaty (2007)

overall review score: 4.2
score is between 0 and 5
The Lisbon Treaty, officially known as the Treaty of Lisbon (2007), is an international agreement that amended the constitutional basis of the European Union (EU). Signed in December 2007 and enacted in December 2009 after ratification by all member states, it aimed to enhance the EU's efficiency, democracy, and coherence by reforming institutional structures and decision-making processes.

Key Features

  • Redefinition of EU institutional structure, including the roles of President of the European Council and High Representative for Foreign Affairs
  • Creation of a long-term President of the European Council with a two-and-a-half-year term, renewable once
  • Introduction of the Charter of Fundamental Rights into EU law, giving it legal binding force
  • Streamlining decision-making procedures by expanding qualified majority voting in the Council
  • Strengthening Parliament's legislative powers through increased co-decision authority
  • Clarification of the criteria for accession and the role of national parliaments in EU affairs

Pros

  • Enhanced democratic legitimacy through increased powers for the European Parliament
  • Improved institutional stability and efficiency
  • Clearer roles and responsibilities for EU institutions
  • Legal reinforcement for fundamental rights via incorporation of the Charter

Cons

  • Complexity of ratification process faced opposition from some member states
  • Perceived loss of sovereignty by certain countries during various debates
  • Some critics argue it did not significantly simplify decision-making compared to previous treaties
  • Initial lack of clarity on certain provisions led to legal uncertainties

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Last updated: Wed, May 6, 2026, 09:58:46 PM UTC