I'm supposing it was in an effort to challenge the USA and keep them from getting a huge strategic advantage, but I don't know for sure
The only one I remember is ww2 where the soviets and uk did a joint invasion of Iran to cut off any possible Nazi Germany supply of oil and influence. Plus another supply point for the liberal regimes to the USSR. The UK stayed longer in Iran after ww2 and the rest is history.
I got it mixed up you're right, I think Hakim also explains it in the video
i thought it was a consequence of the 1941 Iraqi coup, it was pretty justifiable to think that Iran could be goaded into similar action after the ratfucking they got in WW1.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy:
