
Both groups oppose each other.
Abdu Bakar Al-Baghdadi, the leader of ISIS has called Taliban leader Mullah Mohammad Omar “a fool and illiterate warlord”.
Al-Baghdadi has said that Mullah Omar does not deserve a spiritual or political credibility. While on the other hand Taliban fighters have been ordered by their leaders not to let Daesh flag raise in Afghanistan.
Source: http://www.khaama.com/isis-taliban-announced-jihad-against-each-other-3206
Ohter news:
Isis leader Abu Bakr al-Baghdadi 'seriously wounded in air strike'
http://www.theguardian.com/world/20...bakr-al-baghdadi-wounded-air-strike?CMP=fb_gu