Crude prices eased with Brent falling about 9% to roughly $79 per barrel since June 12, as diplomatic progress between the US and Iran helped smooth some immediate supply concerns, TPH Energy Research analyst Matt Portillo said in a Monday note.
The US and Iran signed a memorandum of understanding last week and held initial negotiations in Switzerland on Sunday.
The talks produced a roadmap toward a final agreement, with technical discussions set to continue this week. Markets were also encouraged by reports that Israel has completed its offensive campaign in Lebanon.
However, significant risks remain. Israel has indicated it intends to maintain defensive positions inside Lebanon, while earlier military strikes prompted Iran to close at least its side of the Strait of Hormuz.
In addition, US President Donald Trump's warning that the US could strike Iran if Hezbollah failed to honor a brokered ceasefire led Tehran to suspend direct participation in quadrilateral talks, communicating instead through mediators Pakistan and Qatar.
Iran has said its nuclear program was not discussed during the latest negotiations. Instead, talks focused on Tehran's preconditions for launching technical discussions, including an end to the conflict in Lebanon, oil export waivers, and the release of a portion of Iran's frozen assets.
According to Iranian officials, the latter two measures are expected to enter the "implementation phase" soon.
The Lebanon ceasefire remains the first major test of the diplomatic process, with the two sides establishing a de-escalation cell to help manage tensions.
For energy markets, the restoration of normal shipping through the Strait of Hormuz remains a critical issue. Even if traffic resumes, Iran's proposed framework could complicate operations.
The country's Persian Gulf Strait Authority requires vessels to obtain permits and secure approval 48 hours in advance.
The permit system could also provide the basis for future transit fees once the 60-day period covered by the memorandum of understanding expires.