 However, such ambitions were heavily undermined by the dismantling of the Mostar factory during the Yugoslav Wars and the collapse of Romania's communist government.Another programme begun during the 1970s would result in the development of the G-4 Super Galeb; it was designed as a replacement for Yugoslav Air Force's existing inventory of G-2 Galebs.According to aviation periodical Flight International, the Super Galeb showed unmistakable lineage from the earlier G-2, sharing the same British-sourced Rolls-Royce Viper turbojet engine, albeit uprated for greater performance.