On the 3rd anniversary of the Christchurch attack, the Ukraine crisis asks the West to rethink its definitions of terrorism

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As the Russian invasion unfolds, a deep vein of Ukrainian nationalism – already irritated by the annexation of Crimea and a Russian-backed insurgency in the Donbas region – has been unleashed.

Ordinary civilians have called themselves to arms, vowed to kill Russians in vengeance for their aggression, and promised to fight to the death.