September 30,2011.Warszaw,Poland. The Eastern Partnership summit of heads of states and governments of EU countries and the Eastern Partnership countries in Warsaw. An assessment of the achivements to date, and the increase of EU commitment to its Eastern partners is the main aim of the summit. Pictured: participants of the summit - l-r Donald Tusk, José Manuel Barroso, Georgios Papandreou, Catherine Ashton.