William Raspberry comes across again as a perceptive columnist in his article, "Sullivan: Principles and Peer Pressure," {op-ed, June 10}. The Sullivan principles did not fail. What failed was the foggy moralists who pushed for disinvestment and sanctions without thinking through the consequences.

Certainly Alan Keyes, assistant secretary of state for international affairs, is correct when he says that the combination of sanctions and disinvestment has been counterproductive. I'm glad to see that Mr. Keyes is challenging such opinion-makers as Jesse Jackson and Randall Robinson "to debate the merits of this question based upon the facts, and let the American people be the judge."

Economic evolutionary upward mobility for South African blacks is inevitable in a viable economy. Economic power eventually leads to political power. Unfortunately, some pundits propose a weakened financial state, which is not conducive to supporting meaningful change.

The disinvestment strategists have played into the hands of the power brokers in Afrikanerdom. I'm saddened to see Mr. Sullivan being bamboozled into joining the "total embargo clique." His six-point code did not end apartheid, but the code was a genesis for the chipping away of apartheid. Now we have nothing more than rhetoric with little substance and rapidly decreasing U.S. influence within South Africa. JAMES P. McWILLIAMS Fairfax Station