Pakistan floods: 'The world they knew is gone'

Some 1,400 people have died and aid agencies say three million people have been affected by Pakistan's worst floods in 80 years.

Forecasters say more rain and flooding is likely over the next few days.

The United Nations believe around 980,000 people have lost their homes or been forced to flee, and the UN World Food Programme estimates some 1.8 million need food aid.

The BBC's Lyse Doucet reports.