Intensive talks are set to resume in Switzerland ahead of Tuesday’s looming deadline for a nuclear deal with Iran.
Ministers from six world powers are expected to hold their first full session on Today with Iran’s foreign minister.
The essence of an emerging deal is to keep Iran at least one year away from being able to produce enough nuclear fuel for a single weapon.
In return, Iran would see an easing of economic sanctions.
Iran denies trying to develop nuclear arms saying its programme is peaceful.
Representatives from the US, Germany, France, the UK, China and Russia are at the talks in Lausanne.