In the last 15 years, central banks have purchased securities at unprecedented levels via quantitative easing and foreign exchange intervention. These policies have constituted the core response to crises such as the 2008–09 Great Financial Crisis, the 2011–12 European sovereign debt crisis and the ongoing Covid-19 pandemic. In many cases, policymakers have resorted to these policies as traditional monetary policy was constrained by the zero lower bound. Contribution In this paper, I review recent advances in open economy analysis with financial frictions. This type of analysis offers a different take on exchange ... (full story)