The United Nations has rated the floods in Pakistan as the greatest humanitarian crisis in recent history with more people affected than the South-East Asian tsunami and the recent earthquakes in Kashmir and Haiti combined.

Although the current 1,600 death toll in Pakistan represents a tiny fraction of the estimated 610,000 people killed in the three previous events, some two million more people – 13.8 million – have suffered losses requiring long or short-term help.

Maurizio Giuliano, a spokesman for the UN Office for the Coordination of Humanitarian Affairs (OCHA) said: “This disaster is worse than the tsunami, the 2005 Pakistan earthquake and the Haiti earthquake.”