The only two choices left concerning Iran’s nuclear threat is for Israel to attack or to accept the reality of the Islamic Republic as a nuclear power, former U.S. Ambassador to the United Nations John Bolton told Fox News Wednesday.

“Diplomacy has failed. Sanctions have failed… We are down to two very unattractive options,” said Bolton, who advised Israel more than two years ago that it should attack Iran’s nuclear sites. He said that it would be better if the United States were to lead a military offensive on the nuclear installations but that he knows President Barack Obama is not willing to do so.