NATO is to bolster Europe's eastern flank, including the use of UK military resources, after Russia's "reckless and unacceptable" violation of Polish airspace.

NATO Secretary-General Mark Rutte announced operation 'Eastern Sentry' on Friday, involving the deployment of equipment on the border with Belarus , Russia and Ukraine to deter potential Russian aggression.

Poland shot down Russian drones which flew over the country on Wednesday, something the military alliance has portrayed as an attempt by Moscow to test NATO's military response.

It underlines long-held concerns about the potential expansion of Russia's three-year war in Ukraine.

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Michael Clarke: Russia looking to frighten NATO

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