jingoist

noun

1. One who advocates an aggressive nationalism; one who vociferously supports a nation's military aims.

   “The term "jingoist;" or its equivalent, was applied to Washington and Henry, to Jefferson and Jackson. It was applied to James G. Blaine, the typical American of his time -- a man from beneath whose very toe-nails enough intellect might be scraped to make an hundred Clevelands or McKinleys. All were jingoes in their day and generation, because all preferred the title of sovereign to that of subject...”

adj

1. Jingoistic; extremely supportive of warlike foreign policy.

   “When liberals did acknowledge the persistence of the covenant theme, they treated it like some atavistic beast, lumping it together with the largely aberrant doctrines of ultra-right-wingers, "Jewish conspiracy" advocates, Nazi sympathizers, and jingoist fanatics.”