A TOP Putin crony has warned the Kremlin might seize the " valuables of the British Crown " if the UK supports Ukraine with money from frozen Russian assets.

Ex-Russian President Dmitry Medvedev accused "British thieves" of giving Russian money to "neo-Nazis" in a deranged rant on social media .

It comes after Britain announced a fresh £1 billion support package for Ukraine 's fight against Moscow .

The money for this aid boost was raised using frozen Russian assets, Defence Secretary John Healey revealed.

But in a chilling post on Telegram, Medvedev, now deputy chairman of Russia 's security council, threatened revenge from Moscow.

In his bizarre ramblings, he even referred to Foreign Secretary David Lammy as an "English idiot".

Close Putin ally Medvedev accused Br

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