Obama : Whether U.S. deal a breakthrough or disaster depends on just six months from now . She says if deal is extended beyond then , it will trigger chain of events Obama wo n't want . She says Arab nations threatened by prospect of Iran nukes . The U.N. Security Council had demanded that Iran stop enriching uranium . Ghitis : If Iran can bring deal to a final resolution , it can forestall regional arms race .
Obama : Whether U.S. deal a breakthrough or disaster depends on just six months from now . She says if deal is extended beyond then , it will trigger chain of events Obama wo n't want . She says Arab nations threatened by prospect of Iran nukes . Ghitis : If Iran can bring deal to a final resolution , it can forestall regional arms race .