The Prime Minister issued a lavishly patriotic tribute after a Russian official reportedly dismissed Britain as "just a small island; no one pays any attention to".
David Cameron posted his impassioned riposte on Google+ at the end of the G20 summit in St Petersburg and signed off by saying he was "thinking of setting this to music".
Mr Cameron wrote:
The comments were initially delivered off-camera to the British press and then expanded upon at a media conference.
His remarks were immediately compared to a scene from hit film Love Actually, in which Hugh Grant's prime minister interrupts the US president to say: "We may be a small country but we're a great one, too."
Mr Cameron noted that Mr Putin's chief spokesman Dmitry Peskov had denied making the remark.
We asked ITV News viewers what music David Cameron's tribute should be set to and here are some of the best suggestions: