US military deterrence has been a paper tiger ever since Biden told Iran "don't" [1], and Iran did, and Biden did not respond. Now whoever the sitting US president would be - Trump or anybody else - must restore that deterrence. There is no nice or easy way to do that. The last time the US had to do that was during WW2 and the enemies were not floating heavy, extended media campaigns and funding US universities at the time.

[1] https://m.youtube.com/shorts/A8ce6wzoReA

The Millenium Challenge was 2002, predating Biden by about 20 years, and was the same year Iran was named as part of the "Axis of Evil".

https://en.wikipedia.org/wiki/Millennium_Challenge_2002

https://en.wikipedia.org/wiki/Axis_of_evil#2002_State_of_the...