Core Insights - The Bank of Japan's Governor Kazuo Ueda stated that tightening monetary policy is effective against demand-driven inflation, but the current inflation is primarily supply-driven [1] Group 1 - The current inflation in Japan is mainly attributed to supply-side factors rather than demand-side factors [1] - Tightening monetary policy may not be as effective in addressing the current inflationary pressures due to its supply-driven nature [1]