UN Secretary General Kofi Annan has cleared his former chief of staff, Iqbal Riza, of any violation of staff rules in shredding documents shortly before the start of an inquiry into the oil-for-food scandal, a UN spokesman said today. "After reviewing the findings in the latest Volcker report and consulting with the Office of Legal Affairs ... the Secretary-General has found there is no ground for disciplinary action against him," said the spokesman, Stephane Dujarric. "The Secretary-General acknowledges that Mr Riza's actions were careless but he does not believe that they can be construed as deliberate attempts to impede the...