denuclearization       
noun [ U ] (UK usually denuclearisation) uk/ˌdiː.njuː.kli.ə.raɪˈzeɪ.ʃən/ us/ˌdiː.nuː.kli.ər.aɪˈzeɪ.ʃən/
 无核化
the action of removing nuclear weapons from a place
  negotiations for the denuclearization of the pensinsula 在该半岛进行无核化谈判 
 denuclearization talks  无核化磋商 
 See: denuclearize
 - More examples
 - The denuclearization process was progressing smoothly.
 - The agreement calls for complete denuclearization.
 - All parties are committed to the denuclearization of the region.