Review:

Lisbon Treaty

overall review score: 4.2
score is between 0 and 5
The Lisbon Treaty is an international agreement that amends the constitutional basis of the European Union (EU). Signed in 2007 and ratified in 2009, it aimed to enhance the EU's efficiency, democratic legitimacy, and coherence by reforming institutional structures, streamlining decision-making processes, and expanding the EU's powers in certain policy areas.

Key Features

  • Established a permanent President of the European Council
  • Created the High Representative of the Union for Foreign Affairs and Security Policy
  • Redistributed voting power among member states through a new Qualified Majority Voting system
  • Expanded the scope of qualified majority voting in the Council of the European Union
  • Enhanced Parliament's legislative powers via greater co-decision authority
  • Introduced provisions to improve democratic accountability and transparency
  • Simplified and consolidated treaties into a single legal document

Pros

  • Improved decision-making efficiency within the EU
  • Strengthened democratic legitimacy through increased Parliament influence
  • Streamlined legal framework and treaty structure
  • Enhanced visibility and transparency of EU institutions
  • Better coordinated foreign policy through new high-level positions

Cons

  • Complex and lengthy ratification process faced political challenges in member states
  • Some critics argue it increased centralization of power at the expense of national sovereignty
  • Implementation complexities led to varying degrees of effectiveness across member states
  • Reduced individual member states' control over certain policy areas

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Last updated: Thu, May 7, 2026, 01:31:47 AM UTC