Predators did not need mercy.

Those who cannot conquer must bend the knee. They must find strength, or serve those of us who have. You are my generals. I will send you out: my hunting dogs, my wolves with iron teeth. When a city closes its gates in fear, you will destroy it. When they make roads and walls, you will cut them, pull down the stones. When a man raises a sword or bow against your men, you will hang him from a tree. Keep Karakorum in your minds as you go. This white city is the heart of the nation, but you are the right arm, the burning brand. Find me new lands, gentlemen. Cut a new path. Let their women weep a sea of tears and I will drink it all.

You have a powerful army, Kublai, but the best force is one you do not have to use.

They had learned that Sorhatani expected the same sort of instant obedience as her husband. She had grown up around men of power and had married into the great khan’s family at a very young age. She knew that men prefer to follow, that it takes an effort of will to lead. She had that will.

Kublai went on as if he had not spoken.
“Before you all, in the lands of my enemies, I declare myself great khan of the nation, of the khanates under my brothers, Hulegu and Arik-Boke, of the Chagatai khanate and all others. I declare myself great khan of the Chin lands and the Sung. I have spoken and my word is iron!

This is my empire, Uriang-Khadai. I will not be made to leave. Ready the tumans for battle, Orlok. I will face my enemies and I will destroy them.