The Pope is expected to send his first tweet at 11am this morning.
The Papal missive is expected to be despatched when the clock strikes 12 (Vatican City time) on 12/12/12.
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The shadow chancellor appeared to differ from his leader, who had been initially reluctant to blame the Kremlin for the ex-spy attack.
The Foreign Secretary said the Kremlin's tit-for-tat expulsion of 23 British diplomats would only impact Vladimir Putin's compatriots.
Sunday will be bitterly cold with snow for most.