Israel has never threatened the total destruction of any nation. Israel has never denied the historical tragedies of any other nation, and in fact last year admitted that it had some responsibility to the Palestinian refugees of 1948's war of independence. Iran's ruling regime has been supporting violence against Israel for the past decades through both Hezbollah and Hamas (using them as proxies and nonchalant about Palestinian civilians in the way), defying international calls for cooperation regarding its nuclear program, and there's much more. Majority of Israelis and Palestinians as well as Arab states seek a peaceful co-existence, but these were never the words out of Iran's government.
Netanyahu condemns West Bank arson attack, calling it 'terror' (Haaretz)
from the article: ANALYSIS / Why is Israel suddenly praising Iran sanctions?