Ukraine and Russia failed to hold expected talks on a gas pricing dispute this morning, despite a deadline for Kiev to pay a $1.95 billion debt by Monday or have its gas supplies cut off.
Russian decision to stop deliveries to Kiev could disrupt the gas flow to the European Union, which receives its energy via Ukraine.
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The President-elect's comments on Twitter will come under even closer scrutiny when he takes office on Friday.
Cold, quiet and calm
The eastern European country brought back conscription, is spending on defence, and is now building a wall.