'Then you accept?' he said curtly. His eyes knew the answer from her tone and he shook his head in irritation.

'I cannot,' Sorhatani replied softly. 'My grief for Tolui is the same. I will not marry again, my lord khan. My life now is my sons and no more than that. I want no more than that.'

Ogedai grimaced and the silence came back between them. Sorhatani feared his next words would be to command her, ignoring her will. If he spoke the words, she would have no choice but to obey. To resist would be to throw the bones with the futures of her sons, to see them stripped of authority and power before they had even learned to use it. She had wiped the khan's skin when he had soiled himself unknowing. She had fed him from her own hand when he moaned for peace and death. Yet he was the son of his father. The fate of one wife, one woman, would mean little to him and she did not know what he would say. Keeping silent, she waited with her head bowed, the breeze blowing between them.

It took an age, but at the last, he nodded to himself.

'Very well, Sorhatani. I owe you your freedom, if that is your wish. I will not demand your obedience in this. I have not told Guyuk. Only Torogene knows it was even a thought.'

Relief flooded through Sorhatani. On instinct, she prostrated herself on the grass, placing her head by his foot.

'Oh, get up,' he said. 'A less humble woman I have never met.'

CHAPTER TWENTY-FOUR

Kachiun died in the mountains, above the snowline, where there was neither time nor strength to tend to his body. The general's flesh had swollen with the poison from his infected leg. His last days had been spent in delirious agony, his hands and face mottled with sickness. He had died hard.

The winter had struck early just days afterwards, with blizzards howling through the mountains. Heavy snow blocked the narrow passes Guyuk had scouted through to the plains below. The only blessing of the plummeting temperatures was that it kept the dead from rotting. Tsubodai had ordered Kachiun's body wrapped in cloth and bound to a cart. The brother of Genghis had expressed a wish to be burnt in death, rather than sky-buried, laid out for birds and animals in high crags. The Chin ritual of cremation was becoming more popular. Those of the nation who had become Christian were even buried, though they preferred to go into the ground with the hearts of enemies in their hands, servants for the next life. Neither Tsubodai nor Ogedai laid down the law on any of the practices. The people of the nation made their own choices at a time that could hurt no one else.

There was no single peak to the Carpathians, but dozens of valleys and ridges to be traversed. At first they were the only presence apart from distant birds, but then they came upon the first of the frozen bodies, high up, where the air was painful in the lungs. It lay alone, the hands and face wind-seared to black, almost as if charred by fire. Snow half-covered the man, and one of the minghaan officers set his warriors to dig at similar humps of snow. There were more bodies, the faces dark or pale, Turkic or Russian, often bearded. Men lay with women, their children frozen between them. They were preserved on the heights, their bodies thin, their flesh made stone for ever.

In all, there were hundreds and the generals could only wonder who they had been, or why they had chosen to risk death in the mountains. The bodies did not look old, but there was no way to tell. They could have lain there for centuries, or starved just months before the Mongols came loping along the tracks after them.

The wind and snow of winter came like a new world. From the first flakes, the animal paths vanished and the drifts built and built, having to be dug out at every step. Only the links between scouts at every pass and the sheer numbers and discipline of the tumans saved them. Tsubodai could relieve those at the front, who had to push through with hands and shovels. Those behind walked a wide trail of brown slush, churned up by tens of thousands of trudging feet and hooves. The snows could not stop them. They had already come too far.

As the cold deepened, the weakest and the wounded struggled to keep up. The tumans passed more and more seated figures, their heads bowed in death. There had been children born in the years away from Karakorum. Their small bodies froze quickly, the wind ruffling their hair as they were left behind in the snow. Only the fallen horses were butchered for meat to sustain the living. The tumans pushed on, never stopping until they saw the plains before them and they had left the mountains and eternity behind. It took them two months longer than Tsubodai had hoped. On the other side of the Carpathian mountains, the tumans gathered to mourn a general and a founder of the nation. The army of conscripts sat uncomprehending and sullen as they watched the Mongol shamans sing and tell the story of his life. For a man of Kachiun's history, the tales and songs lasted two full days. Those who witnessed it ate where they stood and heated frozen airag from the icy slush it had become, until they could drink to the brother of Genghis khan. At sunset of the second day, Tsubodai himself lit the funeral pyre they had soaked in oil, then stood back as the black smoke poured out. Tsubodai watched the dark column rise and he could not help thinking of the signal it would send to their enemies. For anyone with eyes to see, the smoke meant the Mongols had crossed the mountains and reached the plains. The orlok shook his head, remembering the white, red and black tents Genghis had raised before cities. The first was simply a warning to surrender quickly. The red cloth went up if they refused and was a promise to kill every male of fighting age. The black tent meant that nothing would survive when the city fell at last. It promised only destruction and bare earth. Perhaps the rising thread of sparks and oily smoke was an omen for those who saw it. Perhaps they would see it and know Tsubodai had come. He could smile at his own vanity, commanding men still thin and weak from the crushing labour they had endured. Yet his scouts were already running. They would find a place to rest and recover, for those who had lost the use of fingers to have them cut away.

The flames gusted and crackled as the wind huffed across the pyre, sending the smoke back into the faces of the men standing around it. They had used a part of the seasoned timber Tsubodai had brought across the mountains, layering it to twice the height of a man over Kachiun's body. The smoke carried the sweetish smell of frying meat and some of the younger ones gagged as they took a breath. Tsubodai could hear pings and creaks from the general's armour as it expanded in the heat, at times sounding like a voice in the fire. He shook his head to clear it of foolishness, then sensed Batu watching him.

The prince of the nation stood with Guyuk, Baidur and Mongke, a group of four all under his command, yet separate from the rest. Tsubodai returned the stare until Batu looked away, his constant half-smile flickering on his mouth.

With a chill, Tsubodai realised Kachiun's death was a personal loss to him. The old general had supported him in council and on the field, trusting Tsubodai to find a way through, no matter what the odds. That blind faith had died with him and Tsubodai knew his flank was exposed. He wondered if he should promote Mongke to some senior post. Of the princes, he seemed least under Batu's spell, but if Tsubodai had misjudged him, there was a chance it would just make Batu's growing power even greater. As the wind gusted stronger still, Tsubodai cursed under his breath. He hated the labyrinth of politics that had sprung up since the death of Genghis. He was used to tactics, to the ruses and stratagems of battle. The city of Karakorum had added layers to those, so that he could no longer predict the knife thrust, the betrayal. He could no longer know the simple hearts of the men around him and trust them with his life.