From a speech he gave today:
The first lesson I would draw is the importance of the rule of law and that of enforceable commitments. Global governance must be anchored in commitments adopted by stakeholders, in rules and regulations with mechanisms which foster and promote its respect.
The second lesson I would draw for global governance is that of respect for the principle of subsidiarity. It is about performing functions at the level where these are more effectively carried.
The third lesson is that “coherence starts at home”. Coherence lies first and foremost with the members of international organizations.
The final lesson I would draw is that since the political “demos” remains essentially national, legitimacy would be greatly enhanced if international issues become part of the domestic political debate. If national governments are held accountable for their behaviour at the international level. The exercise of democracy at the national level needs to integrate an international dimension to foster legitimacy at the global level.
Among the many regional integration attempts, the European Union remains the laboratory of international governance — the place where the new technological frontier of international governance is being tested.
Regardless of your particular views on global governance and international economic integration, I think this speech is very well done and worth a read. Here's one more excerpt:
The global economic crisis we are witnessing has accelerated the move towards a new architecture of global governance, in what I have called a “triangle of coherence”.
On one side of the triangle lies the G20, replacing the former G8, providing political leadership and policy direction. On another side lie member-driven international organizations providing expertise and specialized inputs, be they rules, policies or programmes. The third side of the triangle is the G-192, the United Nations, providing a forum for accountability.
In the longer term, we should have both the G20 and the international agencies reporting to the “parliament” of the United Nations.