Like I said, no one is immune to error. At least with the warden ruling along-side Alastair though the mistakes can be minimized.

As for the Dwarves, if you mean in Origins they already told you. If Harrowmont is in charge he ends up losing rule eventually cause he wasn't strong enough to keep support for him. If the young noble Belign I think his name was takes over he is rather cruel/brutal but the Kingdom ultimately holds together.

If this is something in regards to Inquisition though I honestly have no idea, I haven't followed news on the most recent game much.