The latest recruitment brochure from the Central Intelligence Agency, which beckons the uninitiated to “be a part of a mission that’s larger than all of us,” opens to reveal an image of the red-roofed entrance to Beijing’s Forbidden City. From an oversized portrait on the ancient wall, Chairman Mao and his Mona Lisa smile behold the vast granite expanse of Tiananmen Square. The Cold War is over, and the Soviet Union is gone. The cloak-and-dagger games of Berlin and Prague have been replaced by business and tourism. But China—land of ancient secrets, autocratic leaders, and memories of suppressed uprisings—still holds out the promise of world-historical struggle that can help the CIA meet its recruitment goals.