West, Iran say it's too soon to call progress at nuclear talks

GENEVA (Reuters) - Iran outlined a proposal to world powers on Tuesday on resolving a decade-old standoff over its nuclear programme, but both sides at the Geneva talks warned it was too early to say if a breakthrough was within reach.

With Iran indicating a new willingness to engage with its adversaries, the chief U.S. negotiator at the talks held a rare bilateral discussion with Tehran's delegates, described by a senior U.S. official as "useful".