COP17 is primarily a meeting about climate change and what can be done internationally to mitigate climate change. The overarching mitigation goal is to develop a legally binding agreement to control and limit the amount of GHGs that countries would be allowed to emit. Such a goal compromises the key issues as it is the GHGs that are causing man's contribution to climate change.
Reference:
Thambiran, T, Wright, C et al. 2011. International climate change policy: background and significance of upcoming COP17 meeting for South Africa. Government Digest, Vol 32(2), pp 55-56
Thambiran, T., Wright, C., Archer, E. R., & Garland, R. M. (2011). International climate change policy: background and significance of upcoming COP17 meeting for South Africa. http://hdl.handle.net/10204/5246
Thambiran, Tirusha, C Wright, Emma RM Archer, and Rebecca M Garland "International climate change policy: background and significance of upcoming COP17 meeting for South Africa." (2011) http://hdl.handle.net/10204/5246
Thambiran T, Wright C, Archer ER, Garland RM. International climate change policy: background and significance of upcoming COP17 meeting for South Africa. 2011; http://hdl.handle.net/10204/5246.