At its thirty-eighth session, the General Assembly requested the Conference on Disarmament to resume its examination of the question of a comprehensive test ban, with a view to the negotiation of a treaty on the subject and to take up the question of a revised mendat for the AG-I&J~ Working Group during its 1984 seasion, to determine the institutional and administrative arrangements necessary for establishing, testing and operating an international seirmic monitoring network as part of an effective verification system and to investigate other international measures to improve verification arrangements under such a treaty (resolution 38/63). At its thirty-ninth session, the General Assembly urged the Conference on Disarmament to establish at the beginning of its session in 1985 an &dJ& Committee under item 1 of its agenda (Nuclear-test ban), to resume imnediately its substantive work on a comprehensive test ban, with a view to the negotiation of a treaty, toking into account the previous work and the results of th8 technical test conducted by the Ad Group of Scientific Experts to Consider International Co-operative Measures to Detect and Identify Seismic Events, to monitor nuclear explosions and to determine the capabilities of such a network for monitoring compliance with a comprehensive nuclear-test-ban treaty, and to initiate d8tailed inv8stigation of other measures to monitor and verify compliance with such a I... A/45/100 English Page 146 treaty, including an international network to monitor atmospheric radioactivity (resolution 39153). At its fortieth session, the General Assembly urged the Conference on Disarmament to establish at the beginning of its session in 1966 an &L&R committee under item 1 of its agenda (Nuclear-test ban), to begin negotiations on a comprehensive nuclear-test-ban treaty in accordance with a programme of work covering various issues under the headings of scope, verification and compliancer further urged the Conference to take immediate steps for the establishment of an 
**Analysis**
The text appears to be discussing international efforts to ban nuclear testing and establish a verification system, which suggests that it falls under the category of international diplomacy and security. The mention of a "comprehensive test ban" and "verification arrangements" also implies a focus on disarmament and arms control, which is a key aspect of international security.

**Category**
Science and technology, International relations