Ul-/ "u.s.-soviet Exchange about South Africa Said to Inprove Ties", New lo{k Ti4es" 29 August 197?. p2/ &i!. n3/ "rne Enriched Uranirun Route", Financial Tines (T,onaon), 2\ August 1!fJ. 11)+/ "United States Asks South Africa about A-Bomb Plan", Nev York Tirnes, 21 August 19?7. 115/ "Souttr African stirs New A-Arms F1urry", New York Times, 31 August 19??. 116/ "South Africa Says It is Not PJ.anning Atonic Bomb Test", New Yorh Tirnes, 22 August 19TT, lf/ "hesident Carter's Nevs Conference of August 23", Departnent of State Bu1letin, 1! September t977, p, 376.I'/ 35 /)+o2 Ijns-Llsn Page 33 year inposing an arns embargo on South Africa is one of the consequences of vhatnay be called the Kal-ahari crisis. B. The 22 September l-979 event 72. Following a disclosr:re on ABC-TV - a private American television network - theUnited States Department of State issued on 25 Octobe" 1979 the followins ststement: "the United States Government has an indication suggesting the possibilitythat a low yie1d. nuclear explosion occurred on September A2 in the area of thefndian Ocean and. South Atlentic including portions of the Antarctic continent and the southern part of Africa. No corroborating erridence has been receivedto date- ltre ar:e continuing to assess whether such an event took place." ]!Q/ Nearly one year later, vhat actualLy occurred on 22 Septernber has yet to beconclusivefy established. The indication of a possible nuclear explosion r,ras provi.d.ed- by two rrbhangmetersir on a united states VELA satelrite Dlaced in orbit in l-970 to monitor compliance \rith the 1963 partiaL nucl,ear-test-ban. At 3 a.n.(].ocal- ti.me) on 22 Septenbet' 1979, these sensors observed a flash of light consistentwith that caused by a nucleaf explosion on or near the earthrs suxface. ttre VELATssensors at that instant had. been vatching an area about 3,000 niles in d.i arneter,
**Analysis**
The text appears to be discussing international relations, specifically the tensions and events surrounding the possibility of a nuclear explosion in the Indian Ocean and South Atlantic, as well as the subsequent diplomatic statements and reactions from the United States government. The text does not mention economic development, natural resources, agriculture, forestry, fishing, industry, transport, communication, international trade, health, education, employment, humanitarian aid, or culture. The focus is on science and technology, particularly nuclear technology, and international relations.

**Category**
Science and technology, International relations