The G20 governments also have a key role to play in this process, as do national and regional standard setters and regulators. The G20 governments have endorsed the aim of establishing a single set of high quality global accounting standards at their London summit in April 2009, in the early days of the global financial crisis, and they have reiterated it several times. Effective political support is critical to this project, as whether the world gets a single set of accounting standards will be determined by governments, not by standard setters.