Oil prices were little changed on Monday after a steep five-day slump, as the United States formally imposed punitive sanctions on Iran but granted eight countries temporary waivers allowing them to keep buying oil from the Islamic Republic.
The sanctions are part of U.S. President Donald Trump's effort to curb Iran's missile and nuclear programs and diminish its influence in the Middle East.
Oil markets have been anticipating the sanctions for months. Prices have been under pressure as major producers including Saudi Arabia and Russia have ramped up output to near-record levels, while weak economic figures in China have cast doubt on the demand outlook.
News of waivers on the sanctions limited price gains, and recent weakness in equities markets have fed concerns about global oil demand, said Bob Yawger, director of futures at Mizuho in New York.