He is the author of two major books on the Soviet Navy, and has recently co-authored a series of books for Seaforth Publishing on the French interwar navy: French Battleships (2009) with Robert Dumas, French Cruisers (2013) and French Destroyers (2015) with Jean Moulin, and French Battleships of World War One (2017) with Philippe Caresse. He is also the sole author of Warships After Washington (Seaforth, 2011). John has been associated with Warship as a contributor from its earliest beginnings and took over the editorship in 2004.