Former Clinton administration official Richard Holbrooke and Newt Gingrich pen dueling op-eds, here and here. This is not the first time Holbrooke has got in a tussle of over foreign policy with a Republican. Last October, in a New Yorker piece on Brent Scowcroft and the so-called "realist" camp, Holbrooke argued that Democratic foreign policy should "marry idealism and realism, effective American leadership and, if necessary, the use of force." He also told the New Yorker's Jeffrey Goldberg: "Support for American values is part of our national-security interests, and it is realistic to support humanitarian and human-rights interventions."