
Iran's Foreign Minister Mohammad Javad Zarif addresses in a conference in Tehran, Iran, Tuesday, Feb. 23, 2021. Following the conference Zarif told journalists the country has started implementing a law passed by the parliament to curb UN inspections into its nuclear program and would no longer share surveillance footage of its nuclear facilities with the U.N. agency. (AP Photo/Vahid Salemi)

Iran's Foreign Minister Mohammad Javad Zarif speaks with journalists following a conference in Tehran, Iran, Tuesday, Feb. 23, 2021. Iran's foreign minister says the country has started implementing a law passed by the parliament to curb UN inspections into its nuclear program. Zarif reiterated that Iran would no longer share surveillance footage of its nuclear facilities with the U.N. agency. (AP Photo/Vahid Salemi)

Iran's Foreign Minister Mohammad Javad Zarif prepares to speak with journalists following a conference in Tehran, Iran, Tuesday, Feb. 23, 2021. Iran's foreign minister says the country has started implementing a law passed by the parliament to curb UN inspections into its nuclear program. Zarif reiterated that Iran would no longer share surveillance footage of its nuclear facilities with the U.N. agency. (AP Photo/Vahid Salemi)

Iran's Foreign Minister Mohammad Javad Zarif speaks with journalists following a conference in Tehran, Iran, Tuesday, Feb. 23, 2021. Iran's foreign minister says the country has started implementing a law passed by the parliament to curb UN inspections into its nuclear program. Zarif reiterated that Iran would no longer share surveillance footage of its nuclear facilities with the U.N. agency. (AP Photo/Vahid Salemi)

FILE - In this Feb. 20, 2021, file photo, Director General of International Atomic Energy Agency, IAEA, Rafael Mariano Grossi, right, speaks with spokesman of Iran's atomic agency Behrouz Kamalvandi upon his arrival at Tehran's Imam Khomeini airport, Iran. Iran has said it plans to cease its implementation of the "Additional Protocol," a confidential agreement between Tehran and the IAEA reached as part of the landmark nuclear accord that grants the U.N. inspectors enhanced powers to visit nuclear facilities and watch Iran's program. (Atomic Energy Organization of Iran via AP, File)

Iran's Foreign Minister Mohammad Javad Zarif attends a conference in Tehran, Iran, Tuesday, Feb. 23, 2021. Following the conference Zarif told journalists the country has started implementing a law passed by the parliament to curb UN inspections into its nuclear program and would no longer share surveillance footage of its nuclear facilities with the U.N. agency. (AP Photo/Vahid Salemi)

Iran's Foreign Minister Mohammad Javad Zarif addresses in a conference in Tehran, Iran, Tuesday, Feb. 23, 2021. Following the conference Zarif told journalists the country has started implementing a law passed by the parliament to curb UN inspections into its nuclear program and would no longer share surveillance footage of its nuclear facilities with the U.N. agency. (AP Photo/Vahid Salemi)