Investing.com - Crude oil futures fell on Friday, bringing losses this month to close to 9 percent, as disappointing Chinese data and worries over a supply glut overshadowed geopolitical concerns. Brent crude LCOc1 fell by 60 cents to $44.86 per barrel by 1007 GMT, after settling down 71 cents at $45.46 in the previous session. Russia threatened economic retaliation against Turkey on Thursday and said it was still awaiting a reasonable explanation, but Turkey dismissed the threats as "emotional" and "unfitting". Thus far, market observers say that the group is determined to keep pumping oil vigorously despite the resulting financial strain.