Russia ' s Deputy Foreign Minister said that Iran’s Nuke talks has reached a critical phase, as the deadline approaches. Nuclear talks between Iran and the world's six major powers have entered their most difficult phase, but all involved parties are working on new proposals submitted by Tehran, Russia's Deputy Foreign Minister Sergei Ryabkov said on Thursday. "These talks are like alpinists claiming a peak: 95 percent of the way has been completed, but there are still several steps, the last few metres (which are) the most difficult," Ryabkov told journalists on the sidelines of the BRICS summit in the Russian city of Ufa, Reuters reported. Iran has offered some new solutions to resolve the disputes in the nuclear talks on Wednesday, but Western officials suggested they had heard nothing new from Tehran.