The question of whether the United States may be overly dependent on foreign suppliers for critical military equipment has been debated for decades. The Army, particularly, has been concerned about the reliance on non-U.S. suppliers for critical items used in the manufacturing of ammunition. The issue now is taking added importance in the aftermath of the U.S.-led war in Iraq, which some of our NATO allies—whose industries are suppliers to the U.S. military—did not support. What worries Army leaders is the hypothetical situation in which a country that does not agree with U.S. policies may take retaliatory action by refusing...