Oil falls as U.S. drilling undermines drive to tighten markets

Oil prices fell on Monday as a relentless rise in U.S. drilling undermined an OPEC-led push to tighten supply. Trading activity will be subdued on Monday due to public holidays in China, the United States and Britain. Brent crude futures (LCOc1) were trading down 15 cents, or 0.3 percent, at $52.00 per barrel at 0253 GMT.
