Jack Ryan returns in a blockbuster new novel of action, thrills and intrigue in the No.1 bestselling world created by master storyteller Tom Clancy.
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For decades, Taiwan has been a thorn in the side of the Chinese government. New Chinese President Li Jian Jun is done fooling around. He's devised a secret military operation to take the island. Only one man knows how to stop Li's bloody plan for reunification: Minister of Defense Qin Haiyu. Fearing for his life and the safety of his family, Qin covertly makes contact with the CIA in Beijing and signals his desire to defect to the West.

To get Qin out, John Clark creates an international task force reminiscent of Rainbow Six and goes undercover in mainland China. Meanwhile, Lt. Commander Katie Ryan is deployed to the tip of the spear on the destroyer USS Jason Dunham to defend Taiwan. Threatened by an encircling Chinese armada, she's under pressure to find a flaw in the invaders' plan for her father to exploit.

For his part, President Jack Ryan may have the power of the entire US military at his disposal, but what he really needs are Li's secret plans from Defense Minister Qin so he can stave off a war. Because America's Defense Protocol could lead to a game of mutual destruction that could cost the lives of thousands of young soldiers, sailors, special operators . . . and his daughter.