The Group of Seven (G7) industrialized democracies still have “a lot of work to do” on using interest generated from frozen Russian assets to aid Ukraine, German Finance Minister Christian Lindner said on Saturday. “We are prepared to take further and smarter entrepreneurial approaches to financing,” Lindner said at a meeting of G7 finance ministers in northern Italy, However, the “risks for taxpayers must be minimized and ruled out,” he added. EU member states previously decided to use interest from the €210 billion ($227 billion) in assets of the Russian central bank that are frozen inside t…