According to their Defense Minister Ehud Barak, it's undefined borders, not Iran:
'Defense Minister Ehud Barak on Tuesday said that Israel's failure to strike a peace deal with the Palestinians was a greater threat to the country than a nuclear Iran, Army Radio reported."The lack of a solution to the problem of border demarcation within the historic Land of Israel - and not an Iranian bomb - is the most serious threat to Israel's future," Barak told a Tel Aviv conference.
'
It doesn't seem like his boss agrees.
(AP Photo)