Burgenstock, Switzerland - If Iranian funds are ever unfrozen under a deal to end the Middle East war, Washington can make sure that the money does not finance terrorism, Vice President JD Vance insisted Monday.

"If we ever unfreeze Iranian assets, we can ensure that... Iranian money goes to help the people of Iran and not to fund terrorism," Vance told reporters at Switzerland's Burgenstock resort, where a first round of talks between Tehran and Washington concluded early Monday.

The talks were the first stage of a two-month negotiating period set out under a preliminary deal agreed last week, aimed at drawing a line under the war launched by the US and Israel on February 28.

Among the elements agreed under the so-called memorandum of understanding was a US commitment to eventually "terminate all types of sanctions against" Tehran, and to "make fully available for use the frozen or restricted funds and assets" of Iran.

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Vance suggested that criticism of that portion of the agreement was due to "misreporting."

Iran has been subject to asset freezes and sweeping sanctions by the US and other Western countries since its 1979 Islamic revolution that toppled the US-backed Shah, Mohammad Reza Pahlavi.

While there is no official figure for the total amount of frozen Iranian assets, media reports have estimated the sum at between $100 billion and $123 billion.

Vance said that President Donald Trump's son-in-law and senior adviser Jared Kushner, along with Qatar, which mediated the talks along with Pakistan, had come up with "a very interesting solution" to ensure those funds were not misused.

"If there is any frozen Iranian assets that are unfrozen, then we have approval over that process; the Qataris have approval over that process," he said.

Basically, he said, they had achieved "a classic Trump deal, where if Iranian assets are ever unfrozen, they're going to go to make American farmers richer and to feed the Iranian people."

He called it "great for our people, great for the people of Iran, and fundamentally, again, will contribute to this regional security architecture that we've built and that we're going to work very hard to ensure that it endures."