Anybody out there heard of the theologian Urs von Balthasar? I've stumbled on his voluminous writings in my peregrinations through the stacks. He approaches religion & history through the fundamental category of drama.
All the world's a you-know-what. Yeatsian, too.
Dante et al. as historians. & history as a form of (cosmic) theater.
How are poets historians? By way of the tensions of history which pervade their work. The fascination with events & politics. The confidence & ambition to formulate a poetic image of same. The sense of moral complicity & responsibility. The authority of articulate thought.