If I had to pick one, I would recommend the recent series by podcast TrueAnon on NATO. It's up to date and timely -- they discuss the context of Ukraine for example. Caveats are that it can be irreverent at times (if you can't tell by the name heh) and it has a severe left-wing tilt, although not to a delusional degree in my opinion. It's well sourced, and will give you the knowledge to follow up with your own research in those places you are skeptical.

Getting analysis of Ukraine from Mark Ames is like getting analysis of Sandy Hook from Alex Jones. There are credible people with a skeptical take on the Ukraine situation --- Mearsheimer is a good example. TrueAnon is not.

TrueAnon has Mark Ames on often -- well, twice, at least, but he is not a core member of the podcast, and was not featured on these episodes.

EDIT: I do agree that Mearsheimer is another good person to learn from, but I don't know of an article or video from him that takes a holistic view at things