US Secretary of State Hillary Clinton said she had spent Tuesday morning on the phone with her Russian counterpart, Sergei Lavrov, "finalizing the resolution". Photo by EPA/BGNES
The major world powers have agreed on a proposal for new sanctions against Iran, US Secretary of State Hillary Clinton has said.
A draft resolution will be circulated at the UN Security Council for ratification, she told the US Senate.
The announcement came a day after Iran made a deal with Turkey that would see nuclear material exchanged for enriched uranium in Turkey.
The deal was similar to one proposed by the West and its allies last year.
News of Iran's deal with Turkey was coolly received by the US and its allies.
Clinton said on Tuesday that a number of unanswered questions remained about the deal.
Turkish Prime Minister Recep Tayyip Erdogan called on the world to support it but said that if Iran did not ship out the uranium within one month, as agreed, then it would be on its own.
The US and its Western allies believe Iran is trying to build a nuclear weapon, but Iran denies this.
Clinton said she had spent Tuesday morning on the phone with her Russian counterpart, Sergei Lavrov, "finalising the resolution".
Details were not immediately released but the sanctions are expected to broaden economic penalties on Iranian officials and institutions, the Associated Press news agency reports.