The U.S. Treasury on Monday issued a 60-day waiver permitting Iran to produce and sell crude oil, petrochemicals and petroleum products in U.S. dollars through Aug. 21, the most sweeping rollback of American oil sanctions on Tehran since the 1979 Islamic Revolution. The exemption, known as General License X, also cleared vessels and entities previously under sanctions for transactions and reopened the theoretical door to U.S. imports of Iranian crude.

The waiver converts a memorandum of understanding signed last week between Washington and Tehran into hard economic relief, the first tranche of incentives the U.S. is offering as it tries to lock in a permanent deal. Iran's top negotiator, Mohammad Bagher Ghalibaf, said after the Switzerland round concluded Monday that the talks had also produced an agreement to release $12 billion in frozen Iranian funds, Al Jazeera reported. Vice President JD Vance left Emmen Air Base near Lucerne on Monday, and CNBC reported that the Swiss round had yielded what it called positive progress toward a final deal.

What the license does

General License X removes the principal banking friction that has constrained Iranian crude exports for more than four decades. Under the new terms, Iran can receive oil proceeds directly into its central bank rather than routing payments through shadow banking intermediaries, and dollar clearing for Iranian transactions is authorized for the first time since the late 1970s.

The immediate financial windfall could reach $8 to $9 billion from a floating inventory of roughly 67 million barrels of Iranian crude stranded in the Gulf, according to Miad Maleki, a former Treasury sanctions official now at the Foundation for Defense of Democracies. "Production, sales, dollar payments, petrochemicals and protected shipping — all switched on at once," Maleki said. "Together, they amount to a sustained reopening of Iran's most important revenue stream."

What Tehran gives up

In exchange for the waiver, Iran committed to allowing international nuclear inspectors to return to the country, Al Jazeera reported, reversing Tehran's posture during the 116-day conflict, in which inspector access was suspended. The waiver expires Aug. 21, the same week negotiators have indicated a final accord must be reached or the interim arrangement collapses.

The China angle

The waiver's largest practical consequence may be in Beijing. China currently purchases roughly 90 percent of Iran's oil exports, with independent refineries known as teapots accounting for the bulk of imports. Those buyers have spent years routing payments through opaque channels to avoid secondary U.S. sanctions exposure.

"With dollar clearing now authorized, expect China to accelerate purchases aggressively," Maleki said. He expects a rapid storage "top-off cycle" in which Chinese buyers rush to replenish stockpiles before the August expiration. Kpler senior oil analyst Muyu Xu said buyers were still scrambling to assess the new authorization and complete internal compliance reviews, particularly those not previously active in Iranian crude.

The counterpoint

The substantive objection from inside the same sources reporting the deal is that Washington has handed Tehran a large, immediate financial windfall in return for inspector access that can be withdrawn. Al Jazeera framed the package around the $12 billion in frozen funds Ghalibaf said would be released. Maleki, whose Foundation for Defense of Democracies has long pressed for tougher Iran sanctions, warned that "production, sales, dollar payments, petrochemicals and protected shipping — all switched on at once" amount to a sustained reopening of Iran's most important revenue stream. Trump on Monday pre-empted such critiques by saying any oil profits were meant for Iran to purchase American agricultural goods rather than rebuild its military.

The August expiration sets the next decision point. Iran is expected to use the 60-day window to repair war-damaged oil facilities and lock in longer-term contracts with Chinese buyers, said Michael Feller, chief strategist at Geopolitical Strategy, leaving Washington to decide before Aug. 21 whether to extend the relief or let the license lapse.