are on the brink of famine in south sudan. and a glimpse of the works of art gathered by the greatest royal collector in british history. coming up on sportsday on bbc news, the manchester united manager jose mourinho commits his future of the club, signing a new deal that will run until 2020. good evening. president trump — attending the world economic forum in davos — has predicted a "tremendous increase" in trade between the uk and the usa. he spoke after he held talks with theresa may the president dismissed talk of growing differences between britain and america, not least on the global terror

ignored by both sides. from juba, our chief africa correspondent anne soy reports. a troubled beginning for the world's youngest nation. tens of thousands have been killed. one in three here is displaced, and now they face the threat of famine. the youngest suffer most. this is the face of starvation. christine jackson weighs half as much as she should at almost two years. she's now on life—saving treatment, but her father worries that he won't be able to feed her well when they get discharged. jackson should be one of the better off south sudanese; he has a full—time job and a farm, but four years of civil war and high inflation have left him destitute, and there are many families like his. the doctor in charge here tells me this ward is always busy. so roughly how many children