The United Nations is warning of a looming catastrophe in Somalia, where every third child is suffering from acute malnutrition because of drought and hunger.

The countryside is barren, and thousands of nomads are crossing the country on foot to get aid in Mogadishu, the capital, as the Horn of Africa region faces its worst drought in six decades.

Al Jazeera's Mohammed Adow reports from Mogadishu as part of Al Jazeera's State of Somalia series.