In South Vietnam we are aiding social reform in the countryside while strengthening resistance to invading guerrilla bands. In Laos we are helping to trade civil war for national unity. and thus turn an arena of bigpower rivalry into a neutral nation. In the Middle East. we support an extraordinary range of peacekeeping instruments of the U.N.-a Palestine refugee program. a truce supervision network. and an Emergency Force of 5.100 men in the Gaza strip and along the IsraeliEgyptian frontier. And in the Congo. we helped put the U.N. in to avoid our having to enter central Africa with our own power to counter an active Soviet threat there. Beneath the radioactivity canopy of mutual deterrence. we need much more machinery for peaceful change among nations.