In the eighth episode of House of the Dragon – “Lord of the Tides” – King Viserys Targaryen died of his long-standing illnesses (or whatever was going on with that poor guy), following an eventful family dinner where the king begged his family to reconcile. To reconcile if not for the realm, but for him.
With the king’s passing, the previously stable political environment in Westeros was poised to plunge into a totally normal peaceful transition of power. After all, Viserys had clearly and publicly established his daughter Rhaenyra Targaryen as his heir, and so she should simply take in hand the reins of power and guide the realm, serviceably.
Or mayhaps, there would be the political chaos that had been long predicted.