- 5 updates
Iran will begin to freeze part of its nuclear programme in return for the sanctions relief from January 20.
The deal, agreed between Iran and world powers after months of negotiation led by the EU's foreign policy chief Catherine Ashton, is hinged on Iran curbing its enrichment of uranium.
Officials have another six months from January 20 to agree a final settlement about the activity the West suspects is aimed at obtaining nuclear weapons capability.
William Hague has hailed implementation of an interim deal to freeze Iran's nuclear programme.The Foreign Secretary said the agreement coming into force was an "important step" in settling the differences between the Middle East and international powers.
The United States said that although sanction relief will begin immediately the full benefits will not be released until the deal reaches its end.
Iran will start to receive sanction relief from the first day of the interim nuclear deal, 20th January a US official has confirmed.
Once the IAEA confirms that Iran has implemented the deal on 20th January, the US will suspend some petrochemical and precious metal sanctions.
An interim nuclear deal between Iran and six world powers and Iran will start on 20th January, the EU's foreign policy chief Catherine Ashton said.
Ashton represents the six nations - the United States, Russia, China, France, Britain and Germany - in diplomatic contacts with Iran related to the nuclear standoff.
She said the sides would now ask the United Nations' nuclear watchdog to verify the deal's implementation.
"We will ask the IAEA to undertake the necessary nuclear-related monitoring and verification activities," she said.
Under the agreement, Iran has promised to curb its most sensitive nuclear activities in return for some relief from Western economic sanctions.