Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US, Russian Officials Hail START Treaty Extension Lisa Schlein GENEVA - The United States and Russia have agreed that their five-year extension of the Strategic Arms Reduction Treaty, known as START, will enhance national and international security. The treaty limits the number of strategic nuclear warheads and intercontinental ballistic missiles each side can maintain. In separate speeches to the U.N. Conference on Disarmament, U.S. and Russian permanent representatives to the conference expressed their satisfaction with the START agreement their countries completed on Tuesday. .