Abuja, 12 Aug-(ANA)-US Secretary of State Hillary Clinton has arrived in Nigeria on the fifth leg of her seven-nation tour of Africa.
During her 36-hour visit, Mrs Clinton will meet her Nigerian counterpart, Ojo Maduekwe, and later hold talks with President Umaru Yar'Adua.
Analysts say she will take a tough line on corruption and electoral reform.
Last month, US President Barack Obama skipped Nigeria on his first official Africa trip, in what was seen as a snub for its record on governance.
"Nigeria is undoubtedly the most important country in sub-Saharan Africa," Assistant US Secretary of State for African Affairs, Johnnie Carson, was quoted as saying by Reuters news agency, en route to the Nigerian capital Abuja.
But Mr Carson said it had also been described as "the most corrupt state in Africa".
President Yar'Adua came to power in a widely criticised election in April 2007.(ANA)