Why the prices might be spiking in the first place: The U.S. announced it would be withdrawing from the Iran nuclear deal, which is curtailing crude supplies and which is likely driving the U.S. request. It highlights the delicate politics of the White House moves to punish Iran's energy sector with renewed sanctions, Axios’ Ben Geman notes.

Don't forget:

• Venezuela. Venezuelan output has been declining due to instability and an economic crisis there, driving prices up.
• OPEC has been operating under an oil cut production agreement, which has been affecting prices, too. OPEC will have a chance to review this agreement later this month.

Go deeper:

• Venezuela's economic collapse, by the numbers.
• There are usually seasonal spikes in gas prices this time of year.