Wikileaks: US warns allies on potential diplomatic leak

Reports say Turkey, Israel, Denmark and Norway have also been warned to expect potential embarrassment from the leaks.

The top US military commander Adm Mike Mullen said the release of diplomatic cables was "extremely dangerous" and could put lives at risk.

Wikileaks has said the US authorities are afraid of being held to account.

It has not confirmed exactly when the documents will be made public.

The website, founded by Julian Assange, said earlier this week that the release would be nearly seven times larger than the nearly 400,000 Pentagon documents related to the Iraq war it published in October.