I believed it because he didn't start the same conflicts he started now. More fool me, perhaps, but one person's "held back by circumstances" is another person's "it was all bluster anyway".

It was also consistent with a broader policy of isolationism shown during his first term. Reducing support for NATO, backing out of trade deals - all consistent with America First and not being the world's policeman, which has been the US's justification for every war in the last 80 years.

I'm not American, so probably have a different perspective on this from Americans. But also that's a reason for me to judge a US president disproportionately more on his foreign policy than on say, healthcare or which bathroom people should use.