I was recently watching a video from a class about the abidhamma from Bikku Bodhi and he mentioned about the 3 "realms" (unsure if this is the correct term in theravada tradition) Desire/sense realm, form realm, formless realm.
Now from my original mahayana studies I was "told" from sutra that one can only reach nirvana via the desire realm and only as a human.
So my question is from the actual Buddhas teachings, in what realms can we and can we not reach liberation?
I suppose it goes go without saying that hell beings, ghosts and animals in the desire realm of samsara cannot find the mind states needed for liberation, but what about the gods (or demi gods if they are recognised in the theravada)
https://en.wikipedia.org/wiki/Trailokya