Regarding the opinion-page article "It's Not Too Late to Try Saddam," Oct. 16: In listing those who have taken an interest in the idea of an International Court of Justice, the author should include the US Congress, whose Foreign Operations Appropriations Act of 1990 includes a provision that the president investigate the issue and report back by this month.I also wish that the author pointed out more incisively how national sovereignty can stand in the way of enforcing international law. If the notion that leaders can do whatever they please within their own national boundaries is to be challenged, the idea of national sovereignty must be examined and modified. Ronald J. Glossop, Jennings, Mo. Letters are welcome. Only a selection can be published, subject to condensation, and none acknowledged. Please address them to "Readers Write," One Norway St., Boston, MA 02115.