2009 G20 London summit a force for good in the medium term." Leaders of the member countries began to prepare for the London Summit months before the effective date, notably with two official meetings dedicated to that preparation, one held in Berlin, Germany, on 22 February 2009 for European leaders, and another in Horsham, Sussex, United Kingdom, on 14 March 2009 for Finance Ministers. Leaders of the four European Union member countries of the G20, the United Kingdom, Germany, France and Italy along with the two largest European non-members, Spain and the Netherlands, met in Berlin on 22 February 2009 to prepare for the
2017 G20 Hamburg summit during the summit. In the weeks prior to the summit, sporadic car fires in remote places, such as the neighborhood of Blankenese, occurred regularly in the city. On the night of 18 June 2017, unidentified individuals in Berlin, Hamburg, Cologne, Dortmund, Leipzig, and Bad Bevensen caused a total of 13 arson attacks on tracks of the German railways. A security expert was quoted by the German press agency DPA as saying that a connection to left-wing extremism related to the upcoming G20 Summit was "conceivable". According to a German interior ministry spokesman, cable fires had been caused by "unconventional explosive