As a military region, Pacific Asia is dominated by China's People's Liberation Army Air Force and understandably the nation dominates the fourth edition of AirForces of the World. However, China is not alone in flying cutting edge equipment and this eagerly awaited publication runs the rule over 10 diverse air forces flying equally diverse fleets. Three different stealth types are covered - China's J-20, Japan's own version of the F-35 and South Korea's KF-X - as well as 22 other current and legacy aircraft still serving on the front line.