Russia's marking the 70th anniversary of Germany's surrender in World War Two with the country's biggest-ever military parade.
Thousands of troops have marched through Red Square in Moscow.
The parade is seen as a show of force, with President Putin accusing the international community of ignoring the principle of co-operation between countries.
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Meanwhile, bells will ring out at churches and cathedrals across the UK.
They were silent throughout the Second World War.
Bob Gamble from the Royal British Legion says it's about recognising all of those involved in the war:
