Over the past week, the price of Brent crude fell by 3.2%, WTI – by 2.8%. The decline in oil prices has been observed for three weeks in a row. It was caused by the strengthening of the dollar, the collapse of stock indices and concerns about surplus supply in the world market. The US currency on Friday strengthened to a maximum since May 2017 after the release of quarterly US statistics, which turned out to be better than expected. However, by 18:22 Moscow time on Friday, the price of Brent rose slightly – by 20 cents to 77 dollars 9 cents per barrel. At the same time, WTI crude fell 16 cents to 67 dollars 17 cents a barrel.