Ethiopian leader Meles Zenawi dies at 57

he Ethiopian prime minister, Meles Zenawi, has died.
 
The 57-year-old, who had been seriously ill for several months, had been in power since 1991.
 
The country's deputy prime minister, Hailemariam Desalegn, has stepped in as interim leader.
 
Al Jazeera's Peter Greste looks back at his political career.