U.S. Treasury Secretary Jacob Lew is urging Greece to reach a deal with its creditors, warning that a default would "create immediate hardship for Greece" and damage the world economy. "It's something that the European and global economies don't need to have another crisis," Lew told reporters Friday. Lew said he stressed in a series of one-on-one meetings, including discussions with Greek Finance Minister Yanis Varoufakis, that it was urgent that the debt negotiations be resolved quickly, AP reported.