I’m afraid to say that if Perez thinks that Obama’s soft, toothless approach will get Iran to stop their nuclear weapons production then they will be facing a nuclear Iran in the near future and by then it will be too late for Israel. They will be on their own when attacked and this is ultimately the end game that the Obama administration is banking on.
Me, I think that Israel is begging for Obama to enter into those talks, and guarantee their safety via an agreement.