Iranian nuclear negotiators arrive in Istanbul , Turkey , for talks . Iran could bring `` new initiatives '' to the discussions , its top negotiator says . Istanbul , Turkey ( CNN ) -- Comment: Iran is under intense pressure to rein in its nuclear program .
Iranian nuclear negotiators arrive in Istanbul , Turkey , for talks . Iran could bring `` new initiatives '' to the discussions , its top negotiator says . Comment: Iran is under intense pressure to rein in its nuclear program .