Israel has already learned the hard way that one does not wait until there is a raging forest fire before one should take action. With all the turmoil in Syria, do you suppose any country would bother to send a thank you card to Israel?
Before going over why, the Jews were put at the mercy of many host countries during the pre-World War 2 climate and had little support or control of its own security. Many countries exiled the Jews or had them deported. Others put the Jews in concentration camps where the Jews fell victim to a national German policy and European apathy that help to create the largest genocide in modern human history.
It was in this climate the Jews were given a homeland at the end of the war. In 1948 much of the world watched an Arab coalition try and destroy the fledgling country one day after coming into existence. By a miracle Israel was able to ward off the attacks.
Twice more in 1967 and 1973 an Arab coalition attempted to liquidate Israel, however the attempt in 1973 now called the Yom Kippur War nearly succeeded in defeating Israel. Israel’s mere presence has been an ongoing sore spot for Islamic Middle East countries.
Israel’s policy of “never again” has been the rallying cry for much of its policy decisions in order to maintain its existence and take ownership of its own security.
In the 1980s Israel bombed a nuclear facility of Iraq strongman Saddam Hussein because Israel would not accept that the Iraqi government could go nuclear. Israel faced a blizzard of foreign outrage concerning its action and was criticized for its unilateral action.http://news.bbc.co.uk/onthisday/hi/dates/stories/june/7/newsid_3014000/3014623.stm
When America led a coalition of nations against Iraq after Hussein’s forces grabbed Kuwait, you better believe it was a good thing Iraq did not have nuclear weapons. Thank you very much, Israel.
Several years ago Israel did exactly the same thing with a nuclear facility of Syria that could have produced weapons grade uranium. The objections were a lot more muted, even from the Arab countries. Could one imagine if President Assad possessed nuclear capability what the possible scenario could be?
Israel will not allow its own security or right to exist to be negotiated and you can bet Iran knows this issue quite well. Aside from the typical political posturing and hyperventilating of other countries, Israel’s reputation for not making idle threats is well established.http://www.reuters.com/article/2013/07/14/us-nuclear-israel-iran-idUSBRE96D08H20130714
Walking softly but carrying a big stick is something Israel's enemies understand quite well.