After fighting in Juba sparked a mass exodus of foreigners and left hundreds dead earlier this month, those with no option but to stay put in the South Sudanese capital live in fear and uncertainty. In Nigeria, the UN warns that around a quarter of a million kids are facing starvation in Borno state. And in Central African Republic, it's caterpillar season and that means grub is up. Insect appetisers are a national speciality - nutritious and reportedly delicious.