The G20 summit under the German Presidency will be held on 7 and 8 July 2017 in Hamburg. The priority issues of this year have been put forward by the Federal Republic of Germany as securing stability, increasing sustainability and taking responsibility. While keeping a close watch on the policies and performances of both Germany, which will carry on the Presidency until the end of November 2017, as well as other G20 members with regard to remedies they come up with for current global challenges, we have prepared a small dossier. With the contributions of Didem Demircan, Güven Sak, Menekşe Kızıldere and Catherine Long, we would like to remind the reader about the important issues from the Turkish Presidency in 2015 and shed some light on this years meeting. We hope you'll enjoy reading their analyses.