President Donald Trump early Saturday said that crude-oil swing producer Saudi Arabia has agreed to raise output by as much as 2 million barrels a day.

Via Twitter, Trump indicated that his discussions with the Saudis centered on the need to reduce crude production to combat expected disruptions from output in major producers Iran and Venezuela.

The tweet read: “Just spoke to King Salman of Saudi Arabia and explained to him that, because of the turmoil & disfunction [sic] in Iran and Venezuela, I am asking that Saudi Arabia increase oil production, maybe up to 2,000,000 barrels, to make up the difference…Prices to high! He has agreed!” (see tweet below)

The president has blamed the Organization of the Petroleum Exporting Countries for a recent run-up in prices that in the past he has said “will not be accepted.”

OPEC has teamed up with Russia and other major producers to restrain output—an effort that’s helped push crude back up to late 2014 levels.

On Friday, West Texas Intermediate crude oil traded on the New York Mercantile Exchange for August delivery US:CLQ8, the international benchmark, closed up 1%. Prices for the front-month contract tacked on just over 8% for the week, saw a monthly gain of almost 11% and rose over 14% for the second quarter, with a rally in the first half of nearly 23%, according to data compiled by WSJ Market Data Group and FactSet data.

By comparison, the Dow Jones Industrial Average DJIA, +0.10% declined by 1.3% last week, by 0.6% in June, and posted a gain of 0.7% in the second quarter but has declined by 1.8% so far this year. The S&P 500 index SPX, +0.16% posted a similar weekly drop, while adding 0.5% in June, climbing by 2.9% in the second quarter, and gaining 1.7% in the first half of the year.

Further amplifying crude’s run-up has been a decision by the Trump administration to pull out of a 2015-era nuclear agreement with Iran and reimpose sanctions on the country and could limit production. Political turmoil in Venezuela, a big producer of crude, also is contributing to richer prices.