Secretary of State John Kerry says the United States won’t stand in the way of foreign business deals with non-sanctioned Iranian firms.

Kerry also says the Obama administration is willing to further clarify what transactions are permitted with Iran since last year’s landmark nuclear deal.

Speaking Friday at a meeting with Iran’s foreign minister, Mohammad Javad Zarif, Kerry lamented that the confusion about the new rules was impeding Iran’s ability to get the full benefit of the nuclear deal, including access to formerly frozen funds held by foreign banks.

Iran has complained that it hasn’t yet realized the full benefits of the deal signed last summer by the United States, Iran and five other countries. Zarif said he hoped that Kerry’s comments would begin to open a different path.

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