sabotage
noun
°A deliberate action aimed at weakening an enemy through subversion, obstruction, disruption, and/or destruction.
°An act or acts with intent to injure, interfere with, or obstruct the national defense of a country by willfully injuring or destroying, or attempting to injure or destroy, any national defense or war materiel, premises, or utilities, to include human and natural resourcesJP 1-02 Department of Defense Dictionary of Military and Associated Terms..
verb
°to deliberately destroy or damage something in order to prevent it from being successful.