CNBC | US crude falls 55 cents, settling at $67.04, as concern over global economy deepens CNBC Oil prices fell on Monday as as Russia signaled its output will remain high and concern over the global economy put crude on track for its biggest monthly fall since mid-2016. Losses were limited ahead of U.S. sanctions on Iranian exports that are ... Oil prices decline as demand worries outweigh Iran supply challenges Oil prices fall as investors wary of trade slowdown Oil dips as Russia signals output will stay high |