What would it be like to feel that the whole world was yours? To take a city and have its king writhe in the dust at your feet? His father was right. How different it would be from ruling just this little kingdom of Ferghana. The petty politics of his father’s court bored him. The chief vizier, Qambar-Ali, stank like an old mule in his sweaty robes. With his long yellowing teeth he even looked like one. And he was always up to something, whispering in his father’s ear, bloodshot eyes swivelling to see who was watching. Timur would have sliced off the ugly fool’s head without a moment’s reflection. Perhaps, Babur reflected, he would do it himself when he eventually became king.

Soon it would be time to pray and then to go to the women’s quarters to eat. He jumped down from the step. At that moment he heard a tremendous crack, the battlements shuddered beneath his feet and a few seconds later there came a dull crash. He put out a hand to steady himself and realised he could see nothing. What was happening? Was it one of the earth tremors that sometimes shook the castle? No, the noise was somehow different. As he gasped in shock his mouth drew in choking dust and his eyes streamed involuntary tears as they attempted to clear themselves. Instinctively Babur put up his hands to cover his face and head. As he did so, he heard swift-running feet, then felt strong arms grip him and haul him backwards. ‘Majesty, you are safe.’

He recognised the deep voice. It belonged to Wazir Khan, the commander of his father’s bodyguard. ‘What do you mean. .?’ It was hard to talk; his mouth was dry and gritty, and his tongue felt suddenly too large for it. His words sounded thick, incomprehensible, and he tried again. ‘What’s happened. .?’ he managed. ‘It wasn’t an earthquake, was it?’

Even as he asked the question Babur forced his watering eyes to open and saw the answer for himself. A large chunk of the battlements where the dovecote had been had gone, as if a giant hand had reached out to break the rim off a pie crust. Dried and fissured by the intense summer heat it had suddenly given way. The doves were fluttering in the air like snowflakes.