Leading American and European economists discuss monetary and fiscal policy from an international macroeconomic perspective in a companion volume to the NBER Macroeconomics Annual: cutting-edge research on macroeconomic issues and topical questions concerning the eastward expansion of the...

Intro -- Abstracts -- Introduction -- 1 The Source of Historical Economic Fluctuations: An Analysis using Long-Run Restrictions -- Comment Harald Uhlig, Humboldt Universität zu Berlin, Tilburg University, Bundesbank, and CEPR -- 2 Optimal Monetary and Fiscal Policy in a Liquidity Trap --...