Complex sentence: Vergos, back in Afghanistan in 2001, looking back on events in the early 1980s, ruminates on how CIA/American support for the moudjahiddin against the Russian-backed regime at that time had the unforeseen outcome of creating more radical Islam.
Split into simpler sentences: Vergos, back in Afghanistan in 2001, looks back on events in the early 1980s. He ruminates on how CIA/American support for the Mujahideen against the Russian-backed regime at that time had the unforeseen outcome of creating more radical Islam.