The US’ hosting of this year’s G20 has stepped up a gear, including with last week’s trade ministers’ meeting. However, this intensification of diplomacy comes at a time when there is growing concern that the global body may no longer have the capability to deal with big challenges. In 1999, the US helped create the G20 in response to a succession of crises, including the 1998 Asian economic crash. However, almost three decades later, the global group of nations is increasingly riven with geopol
