On Tuesday, oil prices updated a maximum of 3.5 years on investors' concerns about future supplies from Iran and Venezuela in connection with the prospects for the introduction of US sanctions against the two countries, according to MarketWatch. By 15:01 Moscow time, quotes of July futures for Brent crude rose by 38 cents to 79 dollars 60 cents per barrel. June futures for oil WTI went up by 19 cents to 72 dollars 43 cents per barrel. According to the experts, if the United States imposes sanctions on the Venezuelan oil sector, the problems in this sector will deepen, and oil supplies from the country will decrease. According to the US Secretary of State, Mike Pompeo, the United States will impose the most serious sanctions against Iran. In this case, supplies from Iran can be reduced by the amount from 400 thousand to 1 million barrels per day, Dow Jones writes.