The government has responded by saying the case against the American head of Union Carbide at the time of the leak is still open.

VOA: standard.2010.06.10

Beyond the call for "a more flexible, adaptable and open European Union" there was very little about what changes the prime minister will argue for.

BBC: Cameron's referendum gamble

That Britain's national interest is best served in a flexible, adaptable and open European Union and that such a European Union is best with Britain in it.

BBC: David Cameron speech: UK and the EU

David Cameron will argue that it should follow a renegotiation of the terms of British membership to create what he will call "a more flexible, adaptable and open European Union".

BBC: David Cameron faces Europe test