On Saturday, Iran's deputy oil minister said the country "saw no reason" to attend the talks because it needs to get back to the level it produced before worldwide sanctions against Tehran. Prices had rebounded last week on hopes the OPEC exporters' club and other major players, including Russian Federation, would agree to freeze output levels at Sunday's meeting. Crude oil prices remained lower after major oil-producing nations failed to hammer out a deal over the weekend to reduce output. "We believe prices will rise regardless what OPEC does or does not do as USA shale oil production, not Saudi Arabia, will be the new swing producer", Gheit said. "Delegates said Saudi Arabia had in effect torn up an earlier draft of the deal as it decided it could not be party to an agreement that would give Iran any leeway".
Oil prices fell to multi-month lows on Friday as global supply increased and investors worried about the impact on fuel demand of lower economic growth and trade disputes.
Benchmark Brent crude (LCOc1) fell below $70 a barrel for the first time since early April, down more than 18 percent since reaching four-year highs at the beginning of October.
“There is no slowing down the bear train,” said Stephen Brennock, analyst at London brokerage PVM Oil. “Instead, the energy complex has extended a rout driven by swelling global supplies and a softening demand outlook.”
more detail at: https://finance.yahoo.com/news/oil-prices-down-20-percent-015431732.html