"There must be an unequivocal demand, alongside the negotiations in Geneva, for a change in Iranian policy," Netanyahu said, adding that the world must insist not only on "the elimination of its capability to produce nuclear weapons but a demand to change its genocidal policy. That is the minimal thing the international community must do when it's negotiating with Iran."
In Washington on Saturday, President Barack Obama acknowledged the chances of reaching a comprehensive deal with Iran were no better than 50-50, a startling admission given his leading role in negotiating the interim deal.
"The problem is what will happen in the coming six months," Peres said. "There is no argument that we prefer a diplomatic solution. No one wants to run and shoot."
Asked whether he would be willing to meet Iranian President Hassan Rouhani, Peres said: "We not? I don't have enemies."
But Peres, a Nobel peace laureate, said Rouhani's influence is limited and noted there are other hardline elements in Iran that may not support his outreach to the West. "The purpose is to convert enemies into friends. If it was only him I'd take it with greater assurance but there are other structures, other people," he said.
Given the years of deep animosity between the two countries, any such meeting is highly unlikely.