Brent oil rose to approximately 74 dollars a barrel on Wednesday as an industry report showing a drop in U.S. crude inventories and U.S. sanctions on OPEC producer, Iran, pointed to tighter supplies.

The American Petroleum Institute reported U.S. crude stocks fell last week by 5.2 million barrels, more than three times the drop analysts expected.

“The API inventory data published after the close of trading yesterday are lending buoyancy to prices,” Commerzbank analyst, Carsten Fritsch, said.

Brent crude, the international benchmark, rose  to approximately 70 dollars a barrel by 1006 GMT.

U.S. crude rose to 66.62 dollars.

Oil also found support from a weak dollar which has slipped this week in response to U.S. President Donald Trump’s comment that he was “not thrilled” by the Federal Reserve’s interest rate increases.

A weaker dollar makes oil less expensive for buyers using other currencies.

The prospect of a drop in oil exports from Iran, the third-largest producer in the Organization of the Petroleum Exporting Countries, in response to new U.S. sanctions is also supporting the market.

European oil companies have started to cut back on Iranian purchases, although Chinese buyers are shifting their cargoes to Iranian-owned vessels to keep supplies flowing.

“The Iran issue continues to occupy traders’ minds,” said Greg McKenna, chief market strategist at futures brokerage AxiTrader.

OPEC has started to boost supplies following a deal with Russia and other allies in June, although producers have been cautious so far.

Saudi Arabia told OPEC it cut supply in July, rather than increasing output as expected.

Signs of tighter supply countered concern about slowing oil demand stemming partly from the trade dispute between the United States and China, the world’s two largest economies.

U.S. and Chinese officials were set to resume talks on Wednesday, but Trump has predicted there will be no real progress.