The G7 leaders' decision, including a "front-loaded substantial release" of diesel, came after US President Donald Trump spoke with French President Emmanuel Macron. Trump said the diesel release would happen "immediately", while the G7 statement promised the release within the next 20 days.
Trump and his Republican Party face pressure to address surging prices ahead of the November 3 midterm elections. The president's approval ratings on the economy hit a new low, according to an AP-NORC poll, as the Iran war and his trade battles have increased US prices for oil and other goods.
Gas prices in the US and abroad have soared during the eight-month-long war, a cost Trump has repeatedly said is worth it for making sure Iran does not obtain nuclear weapons. The national average for a gallon of diesel in the US was $US6.37 on Friday, according to AAA, after hitting a record $US6.52 on September 22.
In Australia, petrol and diesel prices climbed to their highest average levels since April. Regular unleaded averaged $2.37 a litre at service stations nationwide in the week to Monday, September 28, up 10 cents a litre from the week earlier, according to figures from the Australian Institute of Petroleum. Diesel rose even more sharply, increasing nearly 14 cents to $2.87 a litre.
French President Emmanuel Macron and US President Donald Trump, pictured at the G7 summit in June, spoke on the phone before the meeting was convened.