The United Nations nuclear agency said it passed a resolution Friday urging Iran to allow inspectors access to two sites where undeclared nuclear material was believed to have been used or stored.
The resolution was adopted at an International Atomic Energy Agency meeting at the United Nations.
Iran has not allowed access to the sites for months, leading to heightened diplomatic tensions.
Britain, France and Germany proposed the resolution, which is supported by the U.S.
The resolution “calls on Iran to fully cooperate with the agency and satisfy the agency's requests without any further delay, including by providing prompt access to the locations specified by the agency.”
The resolution, which China opposes, puts more pressure on Tehran to stop blocking access to the sites.
Iran maintains the IAEA has no legal authority to inspect the sites, where activities are believed to have taken place earlier this century, before Iran agreed to the 2015 nuclear pact with global powers.
The U.S. withdrew from the deal in 2018. The other signatories, Britain, China, France, Germany and Russia, have since tried to preserve the agreement.