With Donald Trump’s presidency hastening the decline of the US-led international order, questions of global governance have become increasingly urgent. Many of the economic-policy decisions that the United States, China, and other emerging players make today will be felt for decades to come.

With the Brics (Brazil, Russia, India and China) holding their 10h annual summit, Jim O’Neill, the highly regarded former Goldman Sachs economist, who was elected chair of think tank Chatham House in April, answers questions on the challenges facing the global economy.