The six-nation summit held in New Delhi brings together the heads of Government of Sweden, Argentina, Mexico, Tanzania, Greece, and India in an earnest attempt to launch a crusade to save humanity from nuclear annihilation. The one-day meeting of these nations is the first major step after the joint appeal originally addressed to the five nuclear weapon powers in May, 1984. Talkie: Prime Minister Andreas Papandreou of Greece, Prime Minister Ol of Palme of Sweden, President Julius Nyrere of Tanzania and Mr. Rajiv Gandhi, Prime Minister of India.