US official says 'not all issues' agreed in Iran nuclear talks

LAUSANNE (AFP) - A senior US official said early Wednesday that there was not yet a full agreement on key points of a deal to curtail Iran's nuclear programme.

"All issues have not been agreed," a senior US official told AFP, after Russian Foreign Minister Sergei Lavrov said that global powers involved in the talks had reached an agreement in principle on "all key aspects" of an outline deal.