Russia said it would continue to find buyers for its oil, despite what it said was a "dangerous" attempt by Western governments to introduce a price cap on its oil exports.
A coalition of Western countries led by the G7 group of nations agreed on Friday to cap the price of Russian seaborne oil at $60 a barrel, as they aim to curb its ability to finance its conflict in Ukraine.
Russian President Vladimir Putin and high-ranking Kremlin officials have repeatedly said that they will not supply oil to countries that implement the price cap.
In comments published on Telegram, Russia's embassy in the United States criticised what it said was the "reshaping" of free market principles and reiterated that its oil would continue to be in demand despite the measures.
"Steps like these will inevitably result in increasing uncertainty and imposing higher costs for raw materials' consumers," it said.
"Regardless of the current flirtations with the dangerous and illegitimate instrument, we are confident that Russian oil will continue to be in demand."
The G7 price cap will allow non-EU countries to continue importing seaborne Russian crude oil, but it will prohibit shipping, insurance and re-insurance companies from handling cargoes of Russian crude around the globe, unless it is sold for less than the price cap.
Israel and Iran attacked each other for a fifth straight day on Tuesday, and US President Donald Trump urged Iranians to evacuate Tehran, citing what he said was the country's rejection of a deal to curb nuclear weapons development.
Israeli tank shellfire killed at least 51 Palestinians on Tuesday as they awaited aid trucks in Khan Younis in the southern Gaza Strip, the territory's health ministry said, adding that dozens of others were wounded.
Russia launched hundreds of drones and dozens of missilesat Ukraine on Tuesday,hitting dozens of civilian targets in Kyiv including a large apartment block, killing at least 15 people and wounding scores, Ukrainian officials said.
US President Donald Trump left the Group of Seven summit in Canada a day early due to the situation in the Middle East, the White House said on Monday.
The U.S. military has moved a large number of refueling aircraft to Europe to provide options to President Donald Trump as Middle East tensions erupt into conflict between Iran and Israel, two U.S. officials told Reuters on Monday, speaking on condition of anonymity.