My visit to the Dadaab refugee camp and a hospital for malnourished children in Wajir, Northern Kenya, today was both enormously upsetting and powerfully motivating. The women I met at Dadaab, their feet bloodied by weeks of walking to reach this refuge, told me harrowing stories of their journeys. Some had been robbed, others encountered violence. Some had even lost their children to hunger on the way. The international community - countries, UN agencies and non-governmental organisations - must now work together to prevent what is already a terrible crisis becoming a humanitarian catastrophe which engulfs this whole region of Africa.