Warning comes after head of Nato called Europe ‘Russia’s next target’ and said countries must prepare for ‘scale of war our grandparents or great-grandparents endured’

Nato’s secretary general Mark Rutte said Europe is already Russia’s next target and ‘we are already in harm’s way’

Warning comes after head of Nato called Europe ‘Russia’s next target’ and said countries must prepare for ‘scale of war our grandparents or great-grandparents endured’

Chief of the defence staff Sir Richard Knighton will warn the situation is ‘more dangerous than I have known during my career’