Leaving you unopposed? Tyrion said.
Not wholly, Sir Kevan said. "The Mallisters still hold Seagard and Walder Frey is marshaling his levies at the Twins."
No matter, Lord Tywin said. "Frey only takes the field when the scent of victory is in the air, and all he smells now is ruin. And Jason Mallister lacks the strength to fight alone. Once Jaime takes Riverrun, they will both be quick enough to bend the knee. Unless the Starks and the Arryns come forth to oppose us, this war is good as won."
I would not fret overmuch about the Arryns if I were you, Tyrion said. "The Starks are another matter. Lord Eddard..."
...is our hostage, his father said. "He will lead no armies while he rots in a dungeon under the Red Keep."
No, Sir Kevan agreed, "but his son has called the banners and sits at Moat Cailin with a strong host around him."
No sword is strong until it's been tempered, Lord Tywin declared. "The Stark boy is a child. No doubt he likes the sound of warhorns well enough, and the sight of his banners fluttering in the wind, but in the end it comes down to butcher's work. I doubt he has the stomach for it."