Fortunes of War by Stephen Coonts

After the collapse of their economy, fanatic Japanese nationalists take matters into their own hands and, with the approval of the Prime Minister, launch an attack on Russia.

Bound by secret protocol to come to Russia¿s aid in the event of war, the US government sends Air Force Colonel Bob Cassidy and a squadron of F-22s to thwart the Japanese in the skies over Siberia. The operation brings Cassidy one on one with Captain Jiro Kimura, flying Japan¿s most secret weapon.

Japan¿s goal is world domination, the price a third world war. All that stands between Kimura and the completion of his mission is Cassidy, a man he once counted his best friend.