Would the topic of national security fall under the category of domestic politics or foreign policy?

[Dragnov]

?

 

[labrat25]

foreign... national security usually implies protecting the US (or any country) from foreign attackers, even if they're already here (ie. spies, sleeper cells, etc) so i would say foreign policy
people who, aside from official nationality, want to harm a given country toward the end of supporting another country or organization

domestic politics would apply more toward the oklahoma city attacks IMHO