On the eve of a hastily-arranged summit of the G7 summit in Brussels, the leaders of the G7 group of industrialised nations warned last night that they stood ready to impose damaging economic sanctions on Russia on top of the asset freezes and travel bans already in place.
"We are united in condemning the Russian Federation's continuing violation of the sovereignty and territorial integrity of Ukraine," they said in a joint communique.
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Through the day, most of the cloud should break up to leave fine conditions for many with spells of sunshine.
The Eiffel Tower in Paris was plunged into darkness, with the Burj Khalifa in Dubia emblazoned with the Union Jack.
The major party leaders' campaigns for the General Election will remain suspended on Wednesday following the Manchester terror attack.