Here are some past posts on the topic, with room for expansion and followup questions:

• Why did Chechnya want independence from the Russian Federation?
  ^(28 Jul 2014 | 2 comments)
  ^(/u/kaisermatias analyzes the issue in context with the fall of the USSR.)

• Please explain the Chechen rebellion/war
  ^(15 Oct 2012 | 23 comments)
  ^(/u/blindingpain contextualizes both recent and long-held grievances between Chechnya and Russia.)

• Wednesday AMA: Chechnya
  ^(08 May 2013 | 354 comments)
  ^(/u/blindingpain does an AMA on the topic which may provide for further background info.)