Czech Foreign Minister Lubomir Zaoralek will travel to Sudan on Sunday to try to free a Czech Christian aid worker convicted of spying and inciting hatred.
Israel refuses to issue visas to Human Rights Watch workers, accusing the NGO of holding an "extreme, hostile and anti-Israel agenda".
The UN needs $4.4 bn to address famine in Yemen, South Sudan, Somalia and Nigeria, UN Secretary General Antonio Guterres said on Wednesday.
A months-long lull in fighting ended on Tuesday, after clashes erupted between Sudan's government and rebels in South Kordofan province, the warring sides confirmed.
The United Nations and others have long accused the government of blocking or restricting aid delivery in the East African nation.
Millions of children are at imminent risk of death from severe acute malnutrition this year, as famine looms in Nigeria, Somalia, South Sudan and Yemen, UNICEF warned.
South Sudan Monday declared famine in some parts of the country, with more than three years of war leaving nearly five million hungry.
Head of Homeland Security John Kelly says that it would be a 'good assumption' to expect that residents and green card holders will be allowed to enter the US.
The former Manchester United ace was barred from passing through the US on his way to Trinidad from Qatar, as debate continues on strict American visa rules.
South Sudan's labour minister resigned on Friday and declared allegiance to rebel leader Riek Machar, making him the second top official to quit in the war-torn country this week.