Critically discuss the Relationship Between ICJ’s Contentious and Advisory Roles?

This question should look at the role of advisory opinions, their function and questions over whether it is appropriate for the Court to answer them. Are there circumstances in which the ICJ should use its discretion to decline a request for an advisory opinion?

Use the following sources and the ppt slides and more sources from you

Robert Y. Jennings, “The Role of the International Court of Justice” (1997) 68 British Yearbook of International Law 1-63.
Keith, Kenneth J., “International Court of Justice Reflections on the Electoral Process” (2010) Chinese Journal of International Law 49-80.
Aust, Anthony, “Advisory Opinions” (2010) 1 Journal of International Dispute Settlement 123-151.
Individual Opinions of Judges Tomka and Skotnikov, Accordance with International Law of the Unilateral Declaration of Independence in Respect of Kosovo (Advisory Opinion), [2010] ICJ Reports, 454-466 and 515-522.