Once upon a time, the roles were reversed.
Democrats were, if anything, skeptical of foreign intervention. Many, especially in the liberal and progressive wings of the party, saw war as inhumane, policing the world as folly and the Pentagon as bloated. Humbled by failure in Vietnam, the party that gave us Eugene McCarthy, George McGovern and Jimmy Carter pursued cooperation rather than conflict as the order of the day.
Republicans, on the other hand, were more unabashedly hawkish — willing to flex U.S. military muscle and project power in support of an American-led world order. For the most part, they believed that if you gave the Soviets, the Chinese or Islamic State so much as an inch in Korea, Vietnam, the Middle East or elsewhere, dominoes would begin to tumble. Peace through strength was the mantra.