Western allies must prepare for a long war in Ukraine as Russia makes incremental gains in a furious battle to control the country’s east, NATO Secretary-General Jens Stoltenberg and British Prime Minister Boris Johnson have both said. In separate comments, Stoltenberg and Johnson also reiterated that Western governments must continue to support Ukraine to deter future aggression by Russian President Vladimir Putin. Stoltenberg said that nobody knew how long the conflict will last. However, “we need to prepare for the fact that it could take years.” At the same time, Boris Johnson said Western allies must “steel ourselves for a long war, as Putin resorts to a campaign of attrition, trying to grind down Ukraine by sheer brutality.”