Contents -- I. Introduction -- II. ECB's Policy Response to the Crisis -- III. Has the Transmission Been Impaired? -- A. Transmission Channels -- B. Methodology -- C. Results -- IV. Monetary Policy and The Return of The Liquidity Trap -- A. Overview -- B. Empirical Assessment -- V. Conclusions -- References -- Tables -- 1. VAR Parameter Estimates -- 2. Risk Factor Loadings -- Figures -- 1. Euro Area: Recent Developments of the ECB's Liquidity Operations -- 2. Euro Area: Cost of Borrowing by Businesses and Households -- 3. Euro Area: Pass-through of The ECB Policy Rate Changes to Market Rates -- 4. Euro Area: The Impact of Crisis on Policy Rate Pass-through -- 5. Euro Area: VAR Residuals of Market Rates -- 6. Euro Area: Effectiveness of Monetary Policy -- 7. Euro Area Macro-Financial Model: Government Bond Yields and Model -- Appendix -- I. Small Theory-based Model for the Euro Area.