Warfare against civilians must never be answered in kind. Terror must never be answered with terror.

Ed Ambrose (2001)
The Lessons of Terror (2002)
What Ifs? of American History: Eminent Historians Imagine What Might Have Been by Antony Beevor Caleb Carr Robert Dallek and John Lukacs (2003)
The Cold War: A Military History by Stephen E. Carr ran as a Democrat for the Rensselaer County Legislature in 2005 but came in fourth of four candidates. in military and diplomatic history.

Caleb Carr (born August 2 1955) is an American novelist and military historian.