Oil prices fell slightly on Wednesday.
It is already the third trading day in a row with falling prices on the oil market, although the prices have been under significantly greater selling pressure in the past two days.
A barrel (159 liters) of the North Sea Brent cost $ 72.38 in early trading.
That was three cents less than the day before.
The price of a barrel of the American West Texas Intermediate (WTI) fell slightly more by 18 cents to $ 70.38.
On the market, the falling oil prices since the beginning of the week are explained by the spread of the delta variant of the coronavirus and concerns about new mobility restrictions.
In addition, sentiment data from industry in the United States and China were disappointing.
A drone attack on an oil tanker off the coast of Oman, which took place at the end of July, failed to boost oil prices for the time being.
NATO has called on Iran to comply with its international obligations.
The alliance states Great Britain, the USA and Romania had come to the conclusion that Iran was most likely responsible for the incident, a NATO spokesman said on Tuesday.
The drone attack is considered explosive because it took place on an important sea trade route. On the coast of Oman, among other things, ships pass that operate between the Persian Gulf and the EU countries.