This should be one of the most important topics in the world these days! It has far reaching catastrophic consequences for a large part of the world. And here is why say this, based upon not only this latest Netanyahu threat but also upon some other.
1) Within last few days Robert Gates, a former US Sec. of Defense, in a 'Face the Nation' interview said one of his biggest worries as Sec Def was Israel going it solo and attacking Iran. Gates said that would be catastrophic for not only Iran but also Israel, the region and even for America's own 'strategic' interests. Gates clearly implied that Israel would like to drag America to its war. BTW, Gates is a dying breed of American diplomats of intelligence and real-politic. He also, very carefully, managed to criticize Israel by saying that what Israel was doing in Gaza is not according to American values.
2) There is also an interview out there on You Tube (I think within last few weeks) of an ex British MI6 officer with some connections with the Israeli intelligence. He said that at one point Netanyahu had just about decided to attack Iran but was firmly told 'NO' by the Israeli intelligence agencies. He also said that Israel shouldn't worry as much about 'the one big one' from the sky as opposed to tens of thousands of rockets/missiles fired upon Israel from all sides.
Based on these, and based on Israel desperately trying to sabotage the revival of the Iran Deal, and based on some other events like Netanyahu may do something stupid to avoid the corruption charges and stay in power, he may do something really really stupid.