One of the significant provisions made by the Lisbon Treaty is the establishment of the European External Action Service to support the enhanced role of the High Representative for Foreign Affairs and Security Policy. In a briefing "Note on the Legal ality of Inclusion of Aspects of EU Development Cooperation and Humanitarian Assistance within the EEAS", Dr. Mirjam van Reisen defines the legal basis for the EEAS as provided by the Lisbon Treaty.
Click here to read this briefing paper.