U.S. crude slumps 4 percent on dollar rally, glut warning

By Barani Krishnan NEW YORK (Reuters) - Oil prices fell on Friday, with U.S. crude down nearly 4 percent and Brent off 2 percent, pressured by a rallying dollar and renewed warnings of an oil glut by the global energy watchdog. A weaker U.S. stock market also weighed on oil, adding to worries in earlier trade of Iran reaching a partial nuclear deal with world powers by end March and a full agreement by June that would end sanctions against the OPEC nation and flood the market with even more crud