Even in a world where diplomacy is an incremental business, the G20 failed to deliver concrete and measurable actions It's a wrap. China's G20 leadership has come to a close in Hangzhou after G20 leaders were treated to a spectacular show on the West Lake. The final G20 communiqué confirms the necessary consensus for G20's long-term vision and commits leaders to a blueprint for innovative growth, but falls decidedly short on substance.