It is not the first time Russia has shown military aggression towards its European neighbours.
In September, NATO Secretary-General Jens Stoltenberg said that warned Russia’s aggressive actions have been noted against its neighbours in eastern Europe.
He said the West was witnessing a Russia which is trying to re-establish a new “sphere of influence”.
Mr Stoltenberg added: “We have seen that in Georgia, in Moldova, in Ukraine, and that requires a response from NATO.
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