Worlds of Exile and Illusion: Rocannon's World / Planet of Exile / City of Illusions (Hainish Cycle, #1-3)

by Ursula K. Le Guin

The Enemy had infiltrated everywhere, had wrecked the League and was running Earth, was in power now and was going to stop the war. And they had achieved all this by their one unexpectable, sinister, alien power: the power to mind-lie.