'nobody ever did endanger Israel before'. Firstly, in Biblical times there were various nations that endangered Israel, leading eventually the dispersion of Jews throughout the world. Secondly in modern times in 1948 there were threats against the newly formed nation of Israel, leading up to '67 there were, in '73 there were today Hezbollah, Hamas, Syria and Iran all endanger Israel. Thirdly the quote from you is extremely poor English.
UN experts: North Korea continues to evade UN sanctions (AP)
from the article: Netanyahu: Iran nuclear deal endangers Israel, we will defend ourselves