For years, the DMZ has been a no-man's-land where armies feared to tread – but not any longer. The rival armies of the USA and the FSA clash in the streets of the city, and Matty Roth watches his adopted city bleed – but is it for the greater good? This Wednesday catch up with Matty Roth in the DMZ written by Brian Wood, with art by Riccardo Burchielli and cover by JP Leon