Russia's ambassador to the Organization for Security and Co-operation in Europe was told 'it will not work' in Vienna on Thursday, as the UK issued a blunt four-word warning in response to Russia's latest 'sleep well' threat over the Ukraine conflict. British envoy Neil Holland used the OSCE meeting to insist the UK 'will not be deterred' from supporting Ukraine, directly answering recent Kremlin rhetoric aimed at countries arming Kyiv.
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