DAVOS, Switzerland, Jan. 25 (Xinhua) -- The annual meeting of the World Economic Forum (WEF) concluded here Saturday on a note of cautious optimism about the world economy. The idea that global economy is on a bumpy path of recovery, but is shadowed by uncertainty, potential risks and challenges was shared by a couple of leading economists at the meeting, including Jim Yong Kim, president of the World Bank, Christine Lagarde, managing director of the International Monetary Fund and Mario Draghi, president of the European Central Bank. The hot political issues such as the Syrian crisis and Iran's nuclear program riveted more attention this year, with couples of political leaders expressing their views and positions via the platform of the WEF. During the four-day meeting, over 2,500 participants from almost 100 countries, including more than 1,500 business leaders and over 40 heads of state or government, exchanged views on and probed into possible approaches to problems such as global economic recovery, financial outlook, new energy, health and climate change. All the issues are under four major topics, namely Embracing Disruptive Innovation, Achieving Inclusive Growth, Meeting Society's New Expectations and Sustaining a world of 9 Billion.