George Osborne's mischievous smile
A revealing comment by George Osborne at Demos this afternoon suggests what we've long suspected, that he and David Cameron don't always see eye-to-eye on foreign affairs.
When asked about foreign policy in a question and answer session, Osborne replied something to the effect of: "I think I'd better leave the foreign policy to William Hague... Michael Gove and I stay strictly silent on foreign policy."
Then he gave a mischievous smile.
It's the mention of Michael Gove that is the telling point, for Gove wasn't even present at the Demos event. Gove, the Shadow Education Secretary, like Osborne himself, is thought to be a "neo-con" in foreign policy - whilst both men are fully signed-up Cameroon modernisers in every other respect.
It's a division which is likely to become a lot more public if the Conservatives achieve office.
Update: I'm terribly sorry - I've just discovered that Michael Gove was at the meeting, but not on the platform. Nonetheless I think the general point is still very valid.