The U.N. nuclear watchdog’s governing council adopted a resolution Friday expressing “deep and increasing concern about the unresolved issues regarding the Iranian nuclear program.”

Among the issues are “those which need to be clarified to exclude the existence of possible military dimensions” in the nuclear program, it says.

The resolution was approved by an overwhelming majority of the International Atomic Energy agency’s governing council, including assents from what is called the E3+3 — Germany, the United States, France, Great Britain, Russia and China — German Foreign Minister Guido Westerwelle said Friday in Islamabad, Pakistan.

The move underscores “the big worry of the international community about a possible military dimension of the Iranian atomic program. It shows the unity and determination of the E3+3 to bring Iran to keeping up its obligations within the community of nations,” Westerwelle said.

“If Iran further denies having serious negotiations regarding its atomic program, new sanctions will be unavoidable,” he said.

World powers have been concerned that Iran is harboring a nuclear weapons program. Iran says its program is for peaceful purposes. But a November 8 report by the IAEA found “credible” information that Tehran has carried out work toward nuclear weapons, including tests of bomb components.

Iran’s permanent envoy to the IAEA, Ali Asghar Soltanieh, said after the vote that allegations against his nation are fabricated and Iran will not succumb to international pressures.

“We will never ever suspend our enrichment,” he said.

The IAEA governing council resolution calls on Iran and the agency to “intensify their dialogue” for urgently resolving “all outstanding substantive issues for the purpose of providing clarifications regarding those issues.”

“Expressing continuing support for a diplomatic solution, the resolution calls on Iran to engage seriously and without preconditions in talks aimed at restoring international confidence in the exclusively peaceful nature of Iran’s nuclear program,” the IAEA said in a press release.

The resolution was adopted in Vienna, Austria.