The thesis examines three different monetary and fiscal policy issues in frameworks of estimated dynamic stochastic general equilibrium (DSGE) models. At first, a Markov switching model is employed to analyze the extent to which monetary policy in the Czech Republic, Poland and Hungary has de facto changed following the introduction of inflation targeting and how successful the newly adopted strategy proved to be in the context of stabilizing target variables. Furthermore, the estimated Russian monetary and exchange rate policy in place is evaluated and compared to policy alternatives with regard to the impact of simultaneously occurring shocks to the oil price as well as capital flows. Finally, it is assessed to which extent the measures of the German stimulus packages during the Great Recession have contributed to a stabilization of the economic activity. |