This quote is from yesterday's PM press conference press which appears to be an admission, at least an implicit admission, that UK troops invaded Iraq illegally.

"We do want to make it clear, it isn't acceptable, they can't be allowed to cross the border and come into Iraq and start killing people or try to kill our troops who are there with the UN mandate now, ......"

He could have said simply "try to kill our troops" or even " try to kill our troops who are there with the UN mandate" but he added the word now" implying there was a "then" when there was no UN Mandate.

Maybe he was on a roll yesterday and didn't realize what he was saying.

 http://www.number10.gov.uk/output/Page8041.asp