Japan's Prime Minister Sanae Takaichi just dropped a clear signal on Wednesday: her government won't hesitate to step into currency markets if things get messy. The key? They're watching whether exchange rate swings actually match economic reality—or if it's just speculative chaos driving the action.

Takaichi's message is straightforward. Authorities are keeping tabs on market fundamentals versus pure speculation. And if the latter takes over? Expect intervention. It's the kind of regulatory stance that reminds everyone—governments still have tools, and they're ready to use them when volatility crosses the line.