Tom Clancy's great hero, Jack Ryan Jr, returns in "Threat Vector": an explosive tale of global superpowers doing battle. Jack Ryan has only just ... Show synopsis Tom Clancy's great hero, Jack Ryan Jr, returns in "Threat Vector": an explosive tale of global superpowers doing battle. Jack Ryan has only just moved back into the Oval Office when he is faced with a new international threat. An aborted coup in the People's Republic of China has left President Wei Zhen Lin with no choice but to agree with the expansionist policies of General Su Ke Quiang. They have declared the South China Sea a protectorate and are planning an invasion of Taiwan. The Ryan administration is determined to thwart these Chinese ambitions, but the stakes are dangerously high as hundreds of Chinese anti-ship missiles thwart the US Navy's plans to protect the island. Meanwhile, Chinese cyber warfare experts have launched a devastating attack on American infrastructure. Jack Ryan Jr and his colleagues at the Campus may be just the wild card that his father needs to stack the deck. There's just one problem: someone knows about the off-the-books intelligence agency and may be ready to blow their cover sky high. "Threat Vector" follows the gripping novels "Locked On" and "Dead or Alive" as the fourth title in Tom Clancy's "Jack Ryan Jr Series". Praise for Tom Clancy: "Truly riveting, a dazzling read". ("Sunday Express"). "A brilliantly constructed thriller". ("Daily Mail"). Thirty years ago, Tom Clancy was a Maryland insurance broker with a passion for naval history. His first novel, "The Hunt for Red October" catapulted onto the "New York Times" bestseller list after President Reagan pronounced it 'the perfect yarn'. Since then Clancy has established himself as an undisputed master at blending exceptional realism and authenticity, intricate plotting and razor-sharp suspense. Mark Greaney has a degree in international relations and political science and is pursuing his master's in intelligence studies with a concentration in criminal intelligence. He is the author of "The Gray Man", "On Target", and "Ballistic".