But the official acknowledged that Sudanese leaders have seemed impervious to persuasion , even when visited by Mr. Powell , British Prime Minister Tony Blair and Secretary General Kofi Annan of the United Nations .
Kofi Annan /business/person/company United Nations
CC DT JJ VBD IN JJ NNS VBP VBN JJ TO NN , RB WRB VBN IN NNP NNP , NNP NNP NNP NNP NNP CC NNP NNP NNP NNP IN DT NNP NNPS .
Kofi Annan
PERSON
United Nations
ORGANIZATION
/business/person/company