Nato faces an all-out fight with Putin. It must stop pulling punches | Simon Tisdall

Having catastrophically failed to deter Russian aggression in Ukraine, the western alliance needs a plan to win the war

In Vladimir Putin's book of strategic blunders, a hefty, as yet unpublished tome to which new chapters are constantly added, the revival of Nato is among his more amazing own goals. Written off as experiencing... brain death" by Emmanuel Macron and derided by Donald Trump, the 30-member cold war-era military alliance is now enjoying a renaissance - thanks, almost entirely, to Russia's president.

Prior to Putin's annexation of Crimea in 2014, few Nato combat forces were stationed in the east European countries that signed up after the Soviet collapse. Last year's full-scale invasion of Ukraine turned a trickle of eastward deployments into a torrent. Bungling Putin had provoked the world's largest, best-armed military force into setting up camp slap bang on Russia's doorstep.