Following Estonia’s admission to the European Union in May 2004 the country finally was included into the rest of Europe not only geographically, but also politically. After decades of foreign rule the Estonians have become fully emancipated members of the European Institutions. This doctoral thesis will provide an answer to the question which options there are for an Estonian foreign policy after the accession of Estonia to the European Union. The analysis of Estonia’s foreign policy will be executed along the following key questions: • What are the options and the scope of design for the foreign policy of a small state within the European Union in spite of its limited resources? • Will small states only become vassals of big EU-states or could they develop into negotiators between conflicting parties within the greater European Union? • Could small states become more assertive within the European Union given their dynamics and their pragmatism? • Could small member states even develop into archetypes? Are there any predestined partners for Estonia within the European Union? The processing and monitoring period began in 2004 and was finished in 2006. During this period several research visits to Brussels and Estonia had been done including interviews with important foreign policy makers. Apart from a comprehensive literature research, those interviews contributed results that were critical for the success of this dissertation.