Maurice Obstfeld, chief economist at the International Monetary Fund (IMF), attends a press briefing at the IMF headquarters in Washington D.C., the United States, on April 18, 2017. The International Monetary Fund (IMF) on Tuesday raised its forecast for global economic growth in 2017, saying buoyant financial markets and a long-awaited cyclical recovery in manufacturing and trade supported the improved outlook. (Xinhua/Yin Bogu)