Mobutu, Shaken at Start of War, Has New Strength 2 Months Later
war in Zaire's Shaba Prov has entered 3d mo and, while mil advances of combined Zairian and Moroccan forces remain modest and inconclusive, there is no doubt that on diplomatic front Pres Mobutu Sese Seko has achieved spectacular success; by turning Shaba invasion into small internatl crisis, Pres Mobutu has come out stronger than he was 2 mos ago; key to success is Mobutu's reliance on personal diplomacy rather than appeals to internatl orgns; situation revd (L)