The failure of the Los Cabos summit to satisfactorily address the European sovereign debt crisis and ominous world economic outlook, let alone agree on concrete measures to improve the oversight and functioning of the global economy, appears to confirm the diminishing effectiveness and relevance of the G20 as an organ of international governance since its inception in December 2008. While few accomplishments were achieved in the area of global governance during the Mexican presidency, acute collective action problems, made worse by the present economic crisis, paralysed the G20 in the lead-up to and during the Los Cabos summit. These collective action problems and the ensuing failure of global governance are attributable to the absence of leadership evident at both the global and European levels, which in turn testifies to the excessive dispersion of state economic and political power within the international system.