Iran nuclear deal: Key points

World powers and Iran have signed a deal on Iran's nuclear programme following intense talks in Geneva.

Both sides committed to a series of steps which will last for six months, while a more conclusive deal is negotiated.

Here are the key points of what the two sides agreed:

What Iran will do

·         Halt enrichment of uranium above 5% purity. (Uranium enriched to 3.5-5% can be used for nuclear power reactors, 20% for nuclear medicines and 90% for a nuclear bomb.)

·         "Neutralise" its stockpile of near-20%-enriched uranium, either by diluting it to less than 5% or converting it to a form which cannot be further enriched

·         Not install any more centrifuges (the machines used to enrich uranium)

·         Leave half to three-quarters of centrifuges installed in Natanz and Fordo enrichment facilities inoperable (Read our guide to Iran's nuclear facilities)

·         Not build any more enrichment facilities

·         Not increase its stockpile of 3.5% low-enriched uranium

·         Halt work on the construction of its heavy-water reactor at Arak, not attempt to produce plutonium there (an alternative to highly enriched uranium used for an atomic weapon)

·         Provide daily access to Natanz and Fordo sites to IAEA inspectors and access to other facilities, mines and mills

·         Provide "long-sought" information on the Arak reactor and other data

What the world powers will do

·         Provide "limited, temporary, targeted, and reversible [sanctions] relief".See Q&A: Sanctions

·         Not impose further nuclear-related sanctions if Iran meets its commitments

·         Suspend certain sanctions on trade in gold and precious metals, Iran's automotive sector, and its petrochemical exports

·         Licence safety-related repairs and inspections inside Iran for certain Iranian airlines

·         Transfer $4.2bn (£2.6bn) to Iran in instalments from sales of its oil

source: BBC