Conversation so far:
What happened with Gulbuddin Hekmatyar in 2008?
In May 2008, the Jamestown Foundation reported Gulbuddin Hekmatyar's HIG group had recently reemerged as an aggressive militant group, claiming responsibility for many bloody attacks against Coalition forces.
Why had Gulbuddin Hekmatyar' HIG group re-emerged in 2008?
The re-emergence of Gulbuddin Hekmatyar as an experienced guerrilla strategist came at a propitious time for insurgency, following the killing of Taliban commander Mullah Dadullah.
What was Gulbuddin Hekmatyar involvement in the HIG group?
Gulbuddin Hekmatyar was an experienced guerrilla strategist and some elements of the Taliban were becoming disorganized and frustrated.
How was Gulbuddin Hekmatyar involved in the HIG group?
Gulbuddin Hekmatyar was an experienced guerrilla strategist and some elements of the Taliban were becoming disorganized and frustrated.
What happened to Gulbuddin Hekmatyar and the HIG group eventually?
Gulbuddin Hekmatyar was pardoned by the Afghan government and on 4 May 2017, he returned to Kabul along with HIG to meet President Ghani after spending two decades in hiding.
Are there any interesting facts about the Gulbuddin Hekmatyar article?
Gulbuddin Hekmatyar's pardon on 22 September 2016 by the Afghan government was called an affront to victims of grave abuses by the Humans Right Watch.

Question: Are there any other dates that are important?
Self-contained rewrite: Are there any other dates that are important in relation to Gulbuddin Hekmatyar, besides September 22 2016?