Hundreds of British troops will be deployed to Poland and Estonia as military alliance NATO responds to increasing aggression from Russia.
500 UK troops will go to Estonia and 150 to Poland as part of an attempt to 'reassure' countries in eastern Europe.
NATO committed to boosting its eastern flank after Russia annexed Crimea in 2014.
Former NATO Commander Rear Admiral Chris Parry says it's an important step.
IN: "After the…
OUT: …more assertive."
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