The United Nations says two and a half million people are on the brink of famine, and food stocks in some places could run out by next month.<br /><br />The UN also says more than 6 million people, over half of South Sudan's population, need aid.<br /><br />Al Jazeera's Dominic Kane reports.<br />Subscribe to our channel http://bit.ly/AJSubscribe<br />Follow us on Twitter https://twitter.com/AJEnglish<br />Find us on Facebook https://www.facebook.com/aljazeera<br />Check our website: http://www.aljazeera.com/