Fidai Mahaz splinter group claims it was behind the murder of Swedish journalist Lars Berg . Many skeptical of the group 's assertion . Radical Islam is at war with the Taliban -- and even more extremist . The group 's leader , Mullah Najibullah , also known by his nom de guerre Umar Khatab , is at odds with the Taliban leadership and has openly called them `` traitors . '' Killing ##s at a delicate time for Pakistan and Afghanistan .
Fidai Mahaz splinter group claims it was behind the murder of Swedish journalist Lars Berg . Many skeptical of the group 's assertion . Radical Islam is at war with the Taliban -- and even more extremist . Killing ##s at a delicate time for Pakistan and Afghanistan .