Stoltenberg, NATO prepares for a ten-year confrontation with Moscow. Secretary General on Welt, 'accelerate the production of weapons' "Deterrence only works if it is credible," he said.

"If Russian President Vladimir Putin wins in Ukraine, there is no guarantee that Russian aggression will not spread to other countries," argued the Norwegian economist and politician as reported by the German newspaper's website. "We must rebuild and expand our industrial base faster, so that we can increase supplies to Ukraine and replenish our stocks," he urged.