What are the motifs in Shadow of the Giant by Orson Scott Card?

World Peace is a recurring idea. The ideas of Ender's Jeesh and world peace often meld within the plot, yet sometimes collide. For example, near the beginning of the story Alai comes face to face with the fact that his orders are not being carried out and that atrocities are committed in his name. Alai, at first, thinks these crimes to be only rumors, but Peter and Petra meet with him, and he learns that these heinous acts are committed in the name of Islam, and the world thinks they occurred with his blessing. His true desire is for world peace, which is evident in his actions when he leaves the comforts of Damascus to lead his soldiers in the field. This moves the plot along as it brings India into conflict with the Muslims and pits a member of Ender's Jeesh against a former member and graduate of Battle School.