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....

For the past few decades, international macroeconomics has postulated the "trilemma": with free capital mobility, independent monetary policies are feasible if and only if exchange rates are floating. The global financial cycle transforms the trilemma into a "dilemma" or an "irreconcilable duo":...

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....