The entire world (other than Yemen) stood by while the US and Israel committed a genocide of hundreds of thousands of people in Gaza. Countries not particularly friendly to either country sent strongly-worded letters but not much more. Allies of the US/Israel actively went along with it and focused on crushing dissent inside their own borders. Then you have other events like trying to literally starve Cuba for no reason other than they looked at us kinda funny… and still the rest of the world does nothing. This is the prior information Trump and Netanyahu are working with. Would it not be entirely rational for the two of them to conclude that they can nuke Tehran and they won’t face any real consequences either domestically or abroad?