The Russo-Ukrainian War. It's really interesting! I found a social science scholar on YouTube that makes videos using academic knowledge to explain things, including politics and military interventions. I can't stop watching videos.
Next on my list is learning how to sing with my terrible voice.
I hyperfixated on the war for about two months when it started, but I was putting more and more of my energy into disputing Russia apologia in the communities I was active until it reached an unhealthy degree. It is an interesting topic, but unfortunately the context and the way I approached it kinda ruined it for me.