Iran, world powers struggle to overcome divisions in nuclear talks
Disagreements on sanctions, monitoring and other issues, Western envoys say.
Iranian Foreign Minister Mohammad Javad Zarif (L) sits with the Iranian delegation before addressing the Opening Meeting of the 2015 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) at United Nations headquarters in New York(photo credit: REUTERS)ByREUTERS