The second link is klocated at First Things and is authored by:
James Turner Johnson is Professor of Religion at Rutgers University and author of several books on the historical development and contemporary use of the just war tradition, including Just War Tradition and the Restraint of War (1981)and Morality and Contemporary Warfare (1999).
As a response to the devastating September 11 terrorist attacks on the World Trade Center and the Pentagon, which took some three thousand innocent lives, the United States is presently engaged in a military campaign to stamp out the evil of international terrorism and its capacity for mass destruction. To help us to reason will about how war should be conducted morally, the just-war tradition has been a source of invaluable guidance. And I, along with many other Catholic scholars and bishops (but not only Catholics), believe that it can be a source of guidance for us today whether we are citizens or soldiers, policymakers or politicians in the current war on terrorism in its various forms.1
However, from the start we must be aware of its limitations. As the Catholic social thinker George Weigel has argued, this tradition is not "an algebra that provides custom-made, clear-cut answers under all circumstances. Rather, it is a kind of ethical calculus, in which moral reasoning and rigorous empirical analysis are meant to work together, in order to provide guidance to public authorities on whom responsibilities of decision-making fall."2 Thus, in making a similar point, the U.S. bishops strongly affirmed that America "has a moral right and grave obligation to defend the common good against mass terrorism," but they also noted that, "Those who subscribe to the just-war tradition can differ in their prudential judgments about its interpretation or its application."3