There are 3 books in the Tom Clancy's Endwar series. The newest book is EndWar which came out in 2013.

1
EndWar

Book cover of EndWar
A new phenomenon begins.

Created by #1 New York Times bestselling author Tom Clancy

Based on the bestselling video game, this new series will take readers onto the battlefields of World War III with the technical savvy and explosive action that Clancy fans have come to expect.
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2
EndWar

Book cover of EndWar: The Hunted
She's known as the Snow Maiden-an operative of a secret group dedicated to world domination. To get their hands on her, U.S. Special Forces Captain Alexander Brent and his team will have to outmaneuver a terrorist faction bent on wiping her off the face of the earth.

3
EndWar

Book cover of EndWar: The Missing
After a devastating nuclear exchange in the Middle East, America and Russia stand on opposite sides in the quest for the world’s resources.

While on a recon mission over Russia, Joint Strike Force pilot Major Stephanie Halverson tests a revolutionary new radar device—until she is shot down. In the jungles…