Russia-Ukraine war: Moscow could expand conflict and should not be underestimated, warns Germany – as it happened

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Conservative leadership hopeful Rishi Sunak said the legacy of Mikhail Gorbachev will be remembered by us all" and that he helped bring peace to Europe".

Boris Johnson has paid tribute to Mikhail Gorbachev, describing him as a man who changed the world and unquestionably changed it for the better".

Mikhail Gorbachev is one of those people who changed the world and unquestionably changed it for the better. When you look at what he did to make Europe whole, free, to give freedom to the countries of the former Soviet Union - it was quite an extraordinary thing.

And of course, Mikhail Gorbachev is one of those people who triggered a change, a series of changes, that perhaps he didn't anticipate.