Although Foreign Minister Avigdor Liberman has stated that the agreement signed in Geneva last night (Saturday) was a "diplomatic win for Iran", he would not take on the Americans head-on at this time. However, he did say that the agreement requires Israel to reassess a clearly-changing reality.
In an interview with Reshet Bet (radio), Liberman said that Israel would have to make some tough decisions - that all the options were on the table. He also stated that the responsibility for the Jewish People and Israel rests solely on the government of Israel.
As to the question of whether or not the US betrayed Israel, Liberman responded in the negative, saying that Washington, too, was facing many challenges, but that America was Israel's greatest ally.