World powers, Iran brace for second day of nuclear talks

World powers and Iran braced Wednesday for a second day of talks aimed at ending their decade-long standoff over Tehran's nuclear programme, after the Islamic republic put a new proposal on the table.

With all sides praising the changed tone from new President Hassan Rouhani's team, senior negotiators backed by experts on nuclear affairs and sanctions were to comb through the details of what Iran billed as a breakthrough offer.