NATO will step back to the future at its Vilnius summit in July, with leaders set to approve thousands of pages of secret military plans that will detail for the first time since the Cold War how the alliance would respond to a Russian attack.
The move signifies a fundamental shift - NATO had seen no need to draw up large-scale defence plans for decades, as it fought smaller wars in Afghanistan and Iraq and felt certain post-Soviet Russia no longer posed an existential threat.
