Under what circumstances can forcible external intervention in the affairs of states be justified? Did 'Operation Allied Force' in Kosovo meet the appropriate criteria?

Under what circumstances can forcible external intervention in the affairs of states be justified? Did 'Operation Allied Force' in Kosovo meet the appropriate criteria? The intervention and resulting conflict between Allied and Serb forces which took place in Kosovo (1999), can be viewed as a key event in which twentieth century international relations were tested within the newly formed notion of world globalisation. The notion of world globalisation has brought with it the increasing consensus of …

…The Kosovo tragedy: the human rights dimensions, Frank Cass, London Cooper, R et al (1999) The Global Order in the 21st Century, Roundtable Heywood, A. (1997) Politics, Macmillan, Baisingstoke MccGwire, M. (2000) 'Why did we bomb Belgrade?' International Affairs, Volume 76 http://www.fco.gov.uk/news/speechtext.asp?2316 http://www.kosovo.mod.uk/ http://www.nato.int/docu/facts/2000/kosov.htm http://www.nato.int/docu/review/1999/9903-07.htm http://www.un.org/aboutun/charter/index.html