Will Putin's bleak winter gamble pay off?

History tells us winter plays a critical role in warfare, with freezing conditions helping to stop everyone from Napoleon to Hitler in their tracks.

Yet Vladimir Putin hopes this winter will make the key breakthrough for his Russian forces in the war in Ukraine.

So will his tactics work or come back to bite him?

Our resident Russian expert Emma Burrows tells News At Ten Anchor Tom Bradby what you need to know.