Mrs Clinton is the highest-ranking US official to visit South Sudan since it gained independence last July.

 

A UN deadline for the nations to resolve disputes over their border and oil transit¹ fees passed on Thursday.

 

South Sudan is the second stop of Mrs Clinton's seven-country African tour.

 

Arriving from Senegal via the Ugandan capital Kampala, she will spend several hours in South Sudan's capital, Juba, where she will hold talks with President Salva Kiir before returning to Uganda later on Friday.

 

While affirming strong US support for South Sudan, Mrs Clinton will voice concern about a "lack of movement" in talks between the two Sudans, an unnamed US official said.

 

The US, which helped mediate² a 2005 peace accord between Sudan and the former southern rebels, is "heavily invested" in its success, according to the official.

 

Exports suspended

 

Her visit comes nearly a month after South Sudanese celebrated³ the first anniversary of independence, which was brought about by the 2005 peace deal.

 

When South Sudan seceded⁴ from Sudan on 9 July 2011, it took about three-quarters of its oil reserves with it, but all the pipelines⁵ used to export the oil run through the former north.

 

The dispute over how much South Sudan pays to use these remains⁶ unresolved, leading Juba to suspend oil exports completely in January.

 

The move has caused widespread economic hardship in both countries, whose budgets depend heavily on oil income.

 

The two countries came close to all-out war in April, when South Sudanese troops briefly⁷ occupied the disputed oil-rich border area of Heglig.

 

Negotiations⁸ between the two countries in the Ethiopian capital, Addis Ababa, aimed at resolving all outstanding issues, are currently stalled.

 

On her return to Kampala later on Friday, Mrs Clinton is expected to press Ugandan officials to step up the hunt for the leader of the rebel Lord's Resistance Army, Joseph Kony.

 

She is also likely to urge Uganda's President Yoweri Museveni to engage in democratic reform and improve his country's human rights record, especially in relation to its often persecuted⁹ gay and lesbian communities.

 

Her 11-day African tour takes her on to Kenya, Malawi, South Africa and Ghana, where she will attend th

点击收听单词发音