[Spoilers] Why did The King in the North execute one of his bannermen, against the advice of his mom, wife and uncle?

Robb Stark needed every man in his army to win the war. Executing lord Karstark would mean risking loosing the Karstark army. However Robb Stark executed him anyway and lost the Karstark Army, just as his advisers predicted.

So why execute Lord Karstark, why not keep him as hostage/prisoner until the war is over?

Submitted December 10, 2021 at 11:51AM by LanvinC9 https://ift.tt/3oEyBGp