The head of the International Federation of Red Cross (IFRC) is warning of social unrest in flood-affected parts of Pakistan, similar to the popular uprisings in Tunisia and Egypt.

Protesters in Egypt continue to defy curfews to express their anger at president Hosni Mubarak, with at least 125 people killed in the violence so far.

IFRC president Tataderu Konoe says there is a risk of political turmoil in districts of Pakistan devastated by last year's floods.

Mr Konoe says it is unclear how long people can stand food shortages and prices rises.

He says emerging countries such as Brazil, Russia, India and China need to play a greater role in providing humanitarian aid in the future.

More than 20 million people were displaced by Pakistan's worst floods on record.

Some areas are still under water in the south of the country.