Israeli officials, however, say this guarantee [that the Obama administration will prevent Iran from building a nuclear weapon] may not be enough for Israel, which Iranian leaders have repeatedly threatened with annihilation.No Iranian leader has threatened Israel with annihilation.
The truths that require more attention (emphasis added):
Basing a military judgment on Iran’s stockpile of medium-enriched uranium could be tricky, however, because while the overall amount of this material has increased, the amount that can be readily used to fuel a bomb has declined since Iran converted some of it into plates to be used in a research reactor in Tehran. . . .
Administration officials contend that the United States will still be able to detect, and prevent, Iran from passing that point. Nor does the administration have evidence that Iran’s supreme leader, Ayatollah Ali Khamenei, has even made a decision to build a bomb.