The Bank for International Settlements (BIS) has issued a warning about the rapid expansion of stablecoins, highlighting significant policy challenges for financial regulators. Since 2023, the stablecoin market has doubled in value to approximately $255 billion, with over 90% concentrated in two dollar-pegged tokens. BIS cautions that the increasing circulation and integration of stablecoins with traditional finance could undermine the monetary sovereignty of major markets, necessitating stricter regulatory oversight.