Tehran has submitted a new proposal for negotiations with the United States through Pakistani mediators, the Islamic Republic News Agency reported on Friday, in a move that could revive stalled diplomatic efforts.

The report did not disclose details of the proposal. However, global oil prices, which had surged amid escalating tensions, fell following the announcement.

Energy markets have been volatile in recent days, driven by concerns over disruptions in the Strait of Hormuz, a critical route for global oil and gas shipments. Fears of supply constraints have intensified amid heightened military and political tensions in the region.

It remains unclear whether the Iranian proposal has been formally delivered to Washington.

A ceasefire has reportedly been in place since April 8. Nonetheless, reports that Donald Trump was to be briefed on potential military options aimed at pressuring Iran to negotiate had earlier pushed oil prices to a four-year high on Thursday.

According to sources cited by Reuters, Iran has activated its air defense systems and is preparing for a potential escalation. Officials reportedly anticipate the possibility of a limited but intense U.S. strike, which could be followed by further action involving regional allies.

The Iran war is “supercharging” the world’s shift to renewable energy, as countries scramble to reduce their exposure to volatile oil and ​gas markets, the U.N. climate secretary said on Thursday.

The U.S.-Israeli war ‌with Iran has upended oil and gas supplies, prompting some countries to ration fuel and others to roll out subsidies and tax cuts to shield consumers from surging prices, Reuters reported.

Early signs indicate the ​war, which began two months ago, is speeding up some countries’ low-carbon ​transition.

Demand for rooftop solar systems across Europe has surged, while countries ⁠including Pakistan have reported a jump in electric vehicle sales.

Chinese President Xi Jinping called this month ​to speed up the construction of a new energy system to safeguard energy ​security, emphasising hydropower development and the expansion of nuclear power.

“Those who’ve fought to keep the world hooked on fossil fuels are inadvertently supercharging the global renewables boom,” said Simon Stiell, Executive ​Secretary of the U.N.’s climate secretariat UNFCCC.

“Renewables offer safer, cheaper, cleaner energy ​that can’t be held captive by narrow shipping straits, or global conflicts,” Stiell told a meeting ‌of ⁠government officials at the International Energy Agency in Paris.

However, the war has also prompted some nations to increase the use of highly polluting coal or furnace oil-based power generation as they struggle to replace gas from the Middle East.

Turkey’s Climate Minister ​Murat Kurum – who will ​preside over the ⁠U.N.’s COP31 climate summit this year – said fossil fuel dependency now topped the global political agenda.

“The best way to protect ​citizens from the violent convulsions of global energy markets is ​to accelerate ⁠the clean-energy transition,” he said in a statement after the IEA event.

Around 60 governments including Brazil, Germany, Canada and Nigeria, met in Colombia this week for a summit to ⁠discuss how ​to phase out fossil fuels.

Conference hosts Colombia and ​the Netherlands said on Thursday countries had agreed to continue working, over the next year, on ​how to do this in their trade systems.