Iran nuclear: UN voices 'deep concern' over plans
The IAEA resolution called on Iran to clear up outstanding questions about its nuclear capabilities, but did not refer it to the UN Security Council.
A recent IAEA report said Iran had carried out tests "relevant to the development of a nuclear device".
Iran's IAEA envoy said the resolution would only strengthen Iran's resolve.
"It will be business as usual... We will continue our work as before," Ali Ashgar Soltanieh told reporters.
Iran insists that it is enriching uranium only to use as fuel for nuclear power stations. However, the US and its allies believe it is trying to develop a nuclear weapon.
Hard-hitting
The resolution was adopted by 32 votes against two - Cuba and Ecuador - at an IAEA meeting in Vienna.
The IAEA has been debating its recent hard-hitting report on Iran - released last week in the Austrian capital.
The resolution asks Iran to clarify matters "to exclude the existence of possible military dimensions" to its nuclear programme.
The document also says it is "essential for Iran and the agency to intensify their dialogue".
BBC diplomatic correspondent Jonathan Marcus says the resolution - drawn up by the US, Britain, China, France, Russia, and also Germany - is essentially a trade-off.
Russia and China have come on board to share in the concern about Iran, but the resolution itself is thus less tough than the US and its allies would have wanted, he says; Kazinform cites BBC.
To learn more go to www.bbc.co.uk