Pics:Iran, world powers pledge new nuclear talks

They ended a six-month freeze over Iran's refusal to curb uranium enrichment in exchange for easing the international sanctions battering its economy. Amid signs of a thaw with the international community, Rouhani has pledged transparency on the nuclear programme and engagement with major powers to try to remove the sanctions. "We hope that this a beginning of a new phase in our relations," Zarif told reporters.