 Ramba uchinyora ndima iyi - Muna 602 mauto eRoma achirwisa muBalkansvakapanduka vachitungamirirwa naPhocas, uyo akabudirira kutora chigaro choumambo ndokuzouraya Maurice nemhuri yake. Khosrau II akashandisa kuurawa kwomubetseri wake sechikonzero chokurwa ndokukundazve ruwa rweRoma rweMesopotamia. Mumakore okutanga ehondo vaPersia vakafarikanya budiriro inoshamisa uye isina kumboitika. Vakabetserwa nokushandisa kwaKhosrau munhu ainyepedzera kuti mwanakomana waMaurice, uye nokupandukira Phokas kwaitungamirirwa nomukuru mukuru weRoma Narses. Muna 603 Khosrau akakunda ndokuuraya mukuru mukuru weRoma Germanus muMesopotamia ndokukomba Dara. Pasinei nokusvika kwokuwedzera kweRoma kubva kuEurope, akawana kumwe kukunda muna 604, nepo Dara yakawa pashure pokukombwa kwemwedzi mipfumbamwe. Mumakore akatevera vaPersia vakakurira zvishoma nezvishoma maguta akavakirirwa eMesopotamia kupfurikidza nokukomba, rimwe pashure perimwe. Panguva imwe cheteyo vakawana rukundo rwokutevedzana muArmenia uye nenzira yakarongwa vakakurira varwi veRoma muCaucasus. 