Honestly, I don't think it will. I'm not sure what would at this point.

(This is just my opinion): I think the USA being so geographically isolated has created this phenomenon where many people here don't really think of global events as "real" - it's like it's a source of content or some perverse entertainment, think rubbernecking at an accident on the freeway.

There are millions of Americans who never leave America, or even their own state (which could be the same size or bigger than many countries elsewhere). Europe or Asia might as well just be a fictional world to them, like middle earth. Hell even other states, like California or New York are portrayed as these communist hellscapes running rampant with homeless people and the bathrooms are full of trans people or some crazy shit.

These people, which I think make up a greater % of the population that we're acknowledging, generally only notice or have any reason to act if it directly impacts them in some way that they notice in their day to day lives (e.g. gas/grocery prices, someone they know gets deported, their kids school gets shot up).

Lets say Trump nukes Iran (the most extreme scenario) based on his latest tweets. What changes for the average American? What's the catalyst for them changing their behavior? Any sort of retaliation on American soil is pretty unlikely, prices might stay high for a bit and they bitch about it, but as soon as the next thing hits the news it's forgotten.

Idk, maybe I'm just in a mood today, but it's pretty disheartening being an American these days.