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by icegreentea2 66 days ago
Western reflexes towards isolationism comes from two factors:

1. Long-term backlash against unchecked globalization. Every western country has to come to grips with the long-term impacts of the deindustrialization that globalization has enabled - this impacts their domestic societal stability, their long-term economic growth, and their ability to act internationally and independently.

2. One particular western leader (who happened to come to power, at least partly riding the wave of the backlash above) has accelerated this trend by taking the possibility of trans-Atlantic (+plus a few Pacific trends) tradebloc to form "globalization lite" as a middle ground solution (honestly, I have no idea how viable this would have actually been), and took it behind the shed and shot it, and then burned the corpse.

Globalization was bearable in part because America did infact run the game, and tended to run the game reasonably well. US aligned nations could all see China growing in strength, but they all figured that as long as they played their role and played nice, that when the time came, they could join the US in whatever new game it wanted to play, or join the US in helping push back. What they perhaps did not count on was just has careless America could be, or that America would want to stop playing with them at all.

Towards your point on confidence and trust. As others have pointed out, Trump has also violated trust in all sorts of ways. Trump delights in norm and trust breaking, as a form of dominance display - both as meat for the base, but also to satisfy his own impulses. But perhaps worse, I think a lot of people are now also calculating that Trump could easily misuse or violate trust without really knowing it. Iran should have clarified to everyone that the Trump administration is willing the act on deeply flawed (or perhaps absent) second order (or even move-countermove) planning.