IN THE BEGINNING, Oleg Bilozor wasn't sure whether he should be launching a new product feature for his startup or training for the battlefield. He was on holiday in the Dominican Republic when Russia invaded, but most of his employees at , which sells a digital sales engagement platform, were still in Ukraine. To stay, or to go? Before the rumours of Russia's invasion had even emerged, Bilozor used to tell his team: "We are not in business. We are at war.