Aid workers struggling to help survivors of Typhoon Haiyan in the Philippines have described the situation as bleak, one week after the storm tore into the country.
A spokesman for Medecins Sans Frontieres said the logistical issues of distributing aid were enormous.
However, correspondents in the ruined city of Tacloban say US military aircraft are beginning to bring in aid.
Philippine officials say the death toll has now risen to 3,621.Interior Secretary Mar Roxas said this figure was as of Thursday and the actual number was likely to be higher. The Philippine's National Disaster Risk Reduction and Management Council said that there were a total of 2,360 confirmed deaths, while other reports from the ground put the figure higher than Mr Roxas' tally.
The discrepancy is likely to be due to the widespread devastation, making confirming casualties and collating information difficult.