The importance of financial markets and international capital flows have increased greatly since the 1990s. How does this affect the effectiveness of monetary policy? We analyse the transmission of monetary policy in two important financial centres, the United States and the United Kingdom....

This lecture argues that the Global Financial Cycle is a challenge for the validity of the Mundellian trilemma. I present evidence that US monetary policy shocks are transmitted internationally and affect financial conditions even in inflation targeting economies with large financial markets....