'Brexit' threat a challenge for global economy: G20

The G20 leading economies warned Friday that the possibility that Britain would pull out of the European Union is a significant challenge to the world economy. Finance ministers of the elite group meeting in Washington said the global economy continues to face significant dangers from volatile financial markets, collapsed commodity prices and low inflation, as they pledged to work to shore up growth. "Geopolitical conflicts, terrorism, refugee flows, and the shock of a potential UK exit from the