K, Changmin, Jaekyung, Jonghyun, Sungmin, Kahi, Luna, Ji Eun, Junhyung, Gayoon, Min, G.O, Bumkey, G.NA, Son Dam-bi, Seo In-guk, IU, and Anna, credited as Group of 20 recorded a song titled "Let's Go" for the summit.

In addition to President Cristina Fernández de Kirchner of Argentina, Prime Minister Julia Gillard of Australia, Chancellor Angela Merkel of Germany, and the president-elect of Brazil, Dilma Rousseff, accompanied her nation's delegation.

[13] This was also the first opportunity for Prime Minister Lee Hsien Loong of Singapore to listen and to make his voice heard at the G20 leaders' meetings.

Other police and security agencies involved were: In preparation, anti-terrorism drills were held by members of the South Korean police, military, special forces and private sector as part of the 2010 Ulchi-Freedom Guardian exercises against simulated hostage situations and chemical, biological and radiological attacks as a preparation for the summit.

[47] Despite public endorsements by attending leaders, most commentators looking back on the summit have argued that only limited progress was made, especially on the headline issue of currency war and addressing trade imbalances.

[48][49][50][51][52][53][54] Leaders were generally unable to agree on key issues, with commentators such as economist Eswar Prasad noting the absence of the sense of unity that had been present at summits during the worse of the global financial crisis of 2007–2009.

[49] Relating to the need to rebalance the world economy, agreement had been reached to work on indicative guidelines which will set suggested maximum limits for current account surpluses and deficits, though these are not due to be fleshed out until 2011.