to redouble their efforts in the urgent conclusion of a global chemical weapons ban. On the outer space question , Canada welcomed the establishment of an Ad Hoc Working Group to discuss this complex issue in greater detail. In support of the Conference on Disarmament 's deliberations , Canada has submitted a comprehensive study of existing international law relating to arms control and outer space. This survey identifies a number of important themes for examination if an international treaty preventing an arms race in space is to be successfully written . It also serves as an excellent example of the evolution and contemporary relevance of international law to the disarmament process. Canada is also working on the application of space-to-space remote sensing for arms control and disarmament purposes. Follow-up work on the application of space-to-ground sensing is also planned. While much of the world's attention is focused on nuclear, chemical and biological weapons, there is a fourth class of weapon of mass destruction , that is, radiological weapons . Although these weapons were identified by the United Nations JSM/plj A/C.l/40/PV.S 7 (Mr. ROche, Canada) almost 40 years ago, there is as yet no international agreement of any kind regarding radiological weapons. Since these weapons do not yet exist, the international community has a rare opportunity to prohibit a potentially devastating weapons system -in fact, to prevent even its conception -and to do so while the political obstacles to such a ban are at a minimum . There is then an urgent need to conclude a radiological weapons convention. Since 1979 the United States and the Soviet Union have been agreed on the basic text of a treaty to ban radiological weapons. Despite the fact that there has been little or no objection to the substance of the draft treaty, agreement has 
**Analysis**
The text appears to be focused on international relations, disarmament, and the prevention of weapons of mass destruction, specifically radiological weapons. It does not mention economic development, natural resources, agriculture, forestry, fishing, industry, transport, communication, international trade, health, education, employment, humanitarian aid, or culture. The text is more concerned with the scientific and technological aspects of space exploration and the application of remote sensing for arms control and disarmament purposes.

**Category**
Science and technology, International relations