By Riley Gutiérrez McDermid Since the war began at the end of last week, NATO and its allies have wasted no time in going after targeted assets. Russian oligarchs who found themselves on sanctions lists since the country’s invasion of Ukraine last week have lost around $83 billion of their combined wealth, a new report says. The number comes via a real-time re-ranking of Bloomberg’s Billionaire Index, which shows that in roughly eight days, Russia’s wealthiest have lost about a third of their wealth. Sanctions lists drawn up by the United States, the United Kingdom and the European Union have …