Joe Bathelt / 11 March 2019
James R. Booth / 16 January 2019
Franziska Schwabe / 9 January 2019
Meeri Kim / 9 November 2018
Meeri Kim / 31 August 2018
Rana Dajani / 16 March 2018
Catherine McBride / 12 March 2018
Philippe Wampfler / 26 February 2018
Angela Saini / 19 October 2017
Sabine Gysi / 18 October 2017
Elizabeth West / 28 August 2017
Katharina Rufener / 3 May 2017