G20 Summit Riots, Toronto, Canada

The G-20 operates without a permanent secretariat or staff. The chair rotates annually among the members and is selected from a different regional grouping of countries. The chair is part of a revolving three-member management group of past, present and future chairs referred to as the Troika. The incumbent chair establishes a temporary secretariat for the duration of its term, which coordinates the group's work and organizes its meetings. The role of the Troika is to ensure continuity in the G-20's work and management across host years.