 As in many other cases, the argument’s implicit premise identifies the link that ties the explicit premise to the conclusion. When we evaluate the argument, it raises a number of questions. How should a “lawful combatant” be defined? Why are combatants who illegally enter a country for the purpose of war (in undertaking surveillance or going behind enemy lines) widely recognized as prisoners of war? What are our moral obligations to combatants, lawful and unlawful? 