Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: A former Serbian commander during the Balkans war, known as 'Captain Dragan', will be extradited from Australia to Croatia to face charges of war crimes. Dragan Vasiljkovic will be transferred by Croatian police from Australia on Wednesday morning to Zagreb, where he will be arrested the moment he steps foot off the plane, according to The Australian. Vasiljkovic - an Australian citizen, former army reservist and ally of Yugoslav dictator Slobodan Milosevic - joined the fighting that would later become a genocide in the self-declared Serbian republic of Krajina at the beginning of the 1990s. The 60-year-old has worked as a golf instructor in Perth since 2005 and went by the name Daniel Snedden.Former Serbian commander in the Balkans War extradited from AustraliaDragan Vasiljkovic will be transferred by Croatian police on WednesdayVasiljkovic is an Australian citizen and former ally of Slobodan MilosevicThe 60-year-old fought the extradition for almost 10 yearsThe Australian Justice Department did not comment on the extradition 
 Question:The Australian has carried out an almost decade-long campaign to ensure _ would have to answer for his alleged crimes.

Dragan Vasiljkovic