Cameron blasts 'dodgy dossier'

The Tory leader said a future Conservative government would have to "think through much more carefully" whether to commit British troops in military interventions overseas.

In a keynote speech to the Chatham House foreign affairs think tank in London, he also announced plans to establish a new cyber threat and assessment centre to guard against attack on the UK's vital computer network.

Mr Cameron said it was "hard to overestimate the damage" caused by the "dodgy dossier" – the second to be published by the Government on Iraq – which included material lifted from the internet, even though it was supposed to be based on intelligence.

"It's made people suspicious of something they should be, frankly, always be able to rely on," he said.