The presidential field has narrowed to a handful of candidates, with two Democrats and six Republicans remaining in the race. In the early months of their campaigns, the presidential hopefuls delivered vague promises to defeat U.S. adversaries and restore the military in terms of size or capability. But as the primaries rage on, the candidates gradually have revealed more substantive national strategy proposals that contain glimpses of the form a defense budget could take. From Sens. Marco Rubio and Ted…
