(BBC News) with David Austin
Disaster officials in Pakistan say the number of people affected by the severe flooding in the country has increased dramatically to 12 million. They said the figure was for just two of Pakistan's four provinces - Khyber-Pakhtunkhwa and Punjab. A United Nations official, Manuel Bessler, told the BBC that there was now a strong risk of disease.
"All over this polluted water, we have temperatures between 35 and 45C. We have civilians exposed to these elements, mosquitoes all over the place. This is an ideal environment for them to spread these waterborne diseases."
A week after the British Prime Minister David Cameron ignited a diplomatic row with Pakistan by accusing it of not doing enough to fight terrorism, Mr Cameron has held talks near London with the visiting Pakistani President Asif Ali Zardari. The two agreed to intensify their cooperation on fighting Islamist militancy. Here is Reeta Chakrabarti.
There was no apparent tension between the two leaders after their meeting, although President Zardari's comments that "storms will come and storms will go" did hint at the turbulent backdrop. Downing Street sources said the meeting was very warm and emphasized progress made on counter-terrorism strategy with an annual summit between the two countries' leaders and formal meetings between military and security staff. But they declined to comment on whether they broached David Cameron's comments on Pakistani elements exporting terror which had so angered the Pakistani government.