Last night's presidential debate on foreign policy is already old news, with most commentators hanging their hats on "horses and bayonets." History will no doubt remember these as some of the most memorable words of the campaign. But beyond declarations of winners, losers, and meme-worthy moments, the real significance of the dialogue lies in other words both spoken and unspoken.
An analysis of key terms indicates how the candidates' arguments represent the greater American dialogue on foreign policy. There were several items mentioned enough times to merit a Twitter hashtag. Others were peculiarly absent.