2009 G20 London summit London Summit and to co-ordinate their actions. The meeting was organised at the initiative of German Chancellor Angela Merkel. The leaders agreed that markets, financial institutions and the wide range of financial assets they create, and hedge funds should be subject to appropriate control. In addition, they called for effective sanctions against tax havens. They also agreed to impose sanctions against countries that intend to undermine their work. Finally, they advocated the doubling of funds available to the IMF. Finance ministers and central bankers of the G20 met in Horsham on 14 March 2009 to prepare for the London Summit.
2018 G20 Buenos Aires summit sent messages of support, which were shown at the ceremony. The first G20 meetings of the Argentine Presidency began in Bariloche in early December 2017. They were attended by central bank deputy governors and deputy ministers of finance, as well as the sherpas. During the buildup to the G20 Summit between world leaders on 30 November 2018, Argentina hosted over 45 meetings at various government levels and areas in 11 different cities throughout the country. List of leaders who took part in the 2018 G20 Buenos Aires summit: As the host nation, Argentina invited additional guest countries and international organizations