If the prosecutors succeed, Mr. Keating will be forced to serve an additional six months to a year in prison.

There is much pressure on the Manhattan district attorney's office, which has yet to win a guilty verdict in any of the Tyco cases, while federal prosecutors have succeeded in a number of white-collar cases.

Last July, prosecutors succeeded in removing three defense lawyers including Bruce Cutler, Mr. Gotti's longtime lawyer.

With her questions, the prosecutor, Robin L. Baker, succeeded in revealing inconsistencies in Mr. Yousry's claims about his academic studies and accomplishments on various résumés he wrote in the mid-1990's.

But in the case of Valerie Wilson, the outed C.I.A. officer, a prosecutor has succeeded in penetrating that sanctum.

Instead, he indicated that his recommendation would go into effect only if prosecutors succeeded in their appeal of Judge Gary's order, a decision that would have the same effect.

The prosecutor did succeed in revealing the shameless ease with which top-secret information is bartered in Washington for political advantage.

Despite legislative efforts to restrict the scope of treason, judges and prosecutors in common law jurisdictions still succeeded in broadening the reach of the offence by "constructing" new treasons.

If prosecutors succeed in having Mr. Stelmokas's citizenship revoked, they say, they will seek to have him deported.

If the prosecutors succeed in pulling the Sturges and Hamilton books off shelves, other art books containing nudes, many health books and books on sexuality could be similarly banned.