Most teens might be preoccupied with school, sports or a part-team job but Alexander Browder has another thing on his mind: a travel ban forbidding him from entering Russia. It’s part of a sanction the U.K.-born teen is facing from the Kremlin over a passion project he’s launched: an open source database of global cryptocurrency laundering. Through his database, Browder says he unearthed Russia’s alleged use of a 2025 stablecoin to circumvent sanctions by Western nations for its 2022 invasion