Production at the Arak heavy-water reactor ceases and Iran depletes much of its stockpile of medium-enriched uranium.
Under the plans, ministers agreed to keep a permanent stockpile of at least six months' supply of coal, increase coal imports, build more oil-burn, nuclear and gas-fired power stations and encourage development of more opencast mines.
But the violence in Syria has only got worse, and there are continuing concerns that the Assad regime has continued to conceal its stockpile of chemical weapons.
The top-end scenario is a framework agreement that outlines the main points of a deal - how much uranium enrichment Iran is allowed to carry out, how big an enriched uranium stockpile it is permitted to keep and what it will do with the remainder; how long an agreement should last, and when and how sanctions should be lifted, and so on.
A spokesman for the Organisation for the Prohibition of Chemical Weapons, which has monitored Syria dismantling its chemical weapons stockpile, did not immediately respond to a request for comment.
Also in the east of the city, loyalists hurled more than 50 petrol bombs at the RUC, and police found a stockpile of 1,200 milk bottles, used to make petrol bombs, hidden on a nearby housing estate.
As a precautionary measure, America's government is planning to stockpile 300m doses of smallpox vaccine: enough for every American citizen.However, using biological or chemical weapons as agents of mass destruction still looks very difficult.
Greg Jones of the Non-Proliferation Policy Education Centre, near Washington, thinks Iran could already produce enough WGU for a single bomb in just six weeks; and in eight weeks even if it were to agree to send its existing stockpile of 20%-enriched uranium out of the country, a likely condition of any deal.
That means forcing it to stop enriching uranium beyond 20% (and shipping its existing stockpile of material above that level to a third party).
In recent months Iran has signalled a willingness to buy time by diverting some of its stockpile of 20%-enriched uranium into fuel for a small research reactor in Tehran used to produce medical isotopes.
Even though Iran is managing its MEU stockpile carefully to keep the negotiations going and preserve ambiguity, on any reckoning it is likely to be well over the line set by Israel before the end of this year.
