middle east powder keg, iran. ed henry on efforts to salvage negotiations over that country s nuclear future. reporter: with just six days to go before a july 20th deadline to forge a deal, secretary of state john kerry met in vienna with the iranian foreign minister. while there are signs iran is showing flexibility but offering a very modest reduction in nuclear enrichment, u.s. officials suggest the moves have been unworkable. are you making any progress? reporter: yet as president obama faces a series of national security crises around the world, upbeat white house officials appear eager to prop up a potential deal. to its credit, iran has defidefy ed expectations of some. reporter: on sunday the israeli prime minister scoffed at the idea of progress in the talks. he laughed off a claim by iran s foreign minister that the