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Full Force and Effect (stylized as Tom Clancy Full Force and Effect, Tom Clancy: Full Force and Effect, or Tom Clancy's Full Force and Effect in the United Kingdom) is a political thriller, written by Mark Greaney and published on December 2, 2014. It is the fourteenth overall entry in the Jack Ryan series and Greaney's second solo entry in the Ryanverse, following three collaborations with original author Tom Clancy prior to Clancy's death in 2013. In the novel, President Jack Ryan and The Campus must stop North Korean leader Choi Ji-hoon from developing his country's nuclear weapons program. It debuted at number three in the New York Times bestseller list.