There are a number of threats on the horizon for a global economy still clawing back from the deepest recession in seven decades, world finance officials said. A potential Greek debt default presents the most immediate risk, the International Monetary Fund's policy committee said. After finance officials wrapped up three days of talks in Washington DC, the IMF set a goal of working toward a "more robust, balanced and job-rich global economy" while acknowledging growing risks to achieving that objective. The Greek finance minister, Yanis Varoufakis, held a series of talks with finance officials on the sidelines of the spring meetings of the 188-nation IMF and World Bank, trying to...