Eagle Vol 18

From the VIZ Media edition

Both veterans, Grant and Yamaoka's differences erupt into national controversy when Yamaoka calls America's role in Vietnam "an act of barbarism." The eruption becomes a firestorm when Yamaoka follows with a televised speech recalling that in World War Two, America championed the idea of an effective world police under the United Nations - concluding that with the end of the Cold War, it's time to make it happen!

Source: Anime News Network Encyclopedia