U.S., South Sudan prod rebels as peace efforts sputter
At least 10,000 people have been killed since fierce fighting erupted in Juba in December
A French riot police stands guard as migrants wait before a daily food distribution close to the city hall in Calais
A French riot police stands guard as migrants wait before a daily food distribution close to the city hall in Calais, northern France August 5, 2014. Groups of migrants, mostly Sudanese and Eritreans awaiting departure to the United Kingdom, have been fighting for several days in the port of Calais in what resembles a "turf war" between rival migrant groups. REUTERS/Pascal Rossignol (FRANCE - Tags: CIVIL UNREST SOCIETY IMMIGRATION POLITICS)
French riot police stand guard as migrants wait before a daily food distribution close to the city hall in Calais
French riot police stand guard as migrants wait before a daily food distribution close to the city hall in Calais, northern France August 5, 2014. Groups of migrants, mostly Sudanese and Eritreans awaiting departure to the United Kingdom, have been fighting for several days in the port of Calais in what resembles a "turf war" between rival migrant groups. REUTERS/Pascal Rossignol (FRANCE - Tags: CIVIL UNREST SOCIETY IMMIGRATION POLITICS)
More than 50 migrants hurt in clashes at French port
FRANCE-MIGRANTS/:More than 50 migrants hurt in clashes at French port
French riot police stand guard as migrants wait before a daily food distribution close to the city hall in Calais
French riot police stand guard as migrants wait before a daily food distribution close to the city hall in Calais, northern France August 5, 2014. Groups of migrants, mostly Sudanese and Eritreans awaiting departure to the United Kingdom, have been fighting for several days in the port of Calais in what resembles a "turf war" between rival migrant groups. REUTERS/Pascal Rossignol (FRANCE- Tags - Tags: CIVIL UNREST SOCIETY IMMIGRATION POLITICS)
French riot police stand guard as migrants queue during a daily food distribution close to the city hall in Calais
French riot police stand guard as migrants queue during a daily food distribution close to the city hall in Calais, northern France August 5, 2014. Groups of migrants, mostly Sudanese and Eritreans awaiting departure to the United Kingdom, have been fighting for several days in the port of Calais in what resembles a "turf war" between rival migrant groups. REUTERS/Pascal Rossignol (FRANCE- Tags - Tags: SOCIETY POVERTY FOOD CIVIL UNREST IMMIGRATION POLITICS)
China urged to reveal payments on natural resources
$500 bn worth of Africa's natural resources extracted each year, but governments there collect only a tenth of revenues
S.Sudan foes resume peace talks as famine looms
At least 10,000 people been killed since fierce fighting erupted in the capital Juba in December