Published Nov 24, 2022 at 11:30 AM EST Updated Dec 05, 2022 at 11:57 AM EST Russia was preparing to attack Japan in the summer of 2021, months before President Vladimir Putin launched a full-scale invasion of Ukraine, an email featuring a letter from a whistleblower at Russia's Federal Security Service (FSB), shared with Newsweek, reveals. The email, dated March 17, was sent by the agent, dubbed t