The US State Department is in conversations with the Ukraine government to stipulate requirements for a humanitarian aid convoy from Russia to cross borders.
Deputy spokesperson Marie Harf said the International Red Cross would take control of the aid and distribute it once the convoy crossed the border into Ukraine.
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The boxer said it was the "least he could do" and even donated the £30,000 shorts he wore in his last fight against Devon Alexander.
By Sunday it should become drier with spells of winter sunshine but temperatures will still remain on the cool side.
There was no White Christmas but here's a look at the best Boxing Day snow scenes.