It could be argued either way regarding a Dominion, technically ireland still was and until Dev was elected was active within the Commonwealth structures, but yeah by 38/39 we were basically out the door. And tbh it doesn’t matter much about Dev, all the way back to 1922 we were flag that we would be neutral post Independence, but this could butterfly away the return of the Ports which could force Ireland to join the war.Yet I've never seen it mentioned before.
That's a cite.
That seems delusional - expecting Ireland under de Valera to join a British war? They might assume continued use of the treaty ports, but expecting a declaration of war? Ireland was nominally a Dominion, but not willingly, so I didn't count it.