Globalisation has greatly increased the degree of interdependence across countries. Macroeconomic policy must therefore take a global perspective, particularly in the case of small open economies such as Singapore. From a modeller’s point of view, this requires considering many countries, regions and markets, as well as multiple channels of transmission, including trade and financial linkages. Cross-country interdependencies are increasingly reflected in the effects of global shocks, to oil or food prices for example, as well as technology and policy uncertainty spillovers.

• Worldwide economic activity is vivid in summer 2017. Data on production for the first quarter of the year were only mixed: in the euro area quarterly growth was accelerating, but it went down in the US, Japan, and China. Other basic indicators, however, suggest that these economies continue expanding healthily. • Risks concerning the international economic policy framework remain, in particular since the economic agenda of the US government is still unclear, and no one knows whether the Brexit negotiations will lead the way to an orderly separation of Britain from the EU. • Production in the euro area has been expanding by more that 1 ½ % per year for almost three years now; since summer 2016, this expansion has even gained a bit of pace, mainly due to a expansion in France and, to a lesser extent, in Italy. • The ECB’s cautious hints at a coming normalization of monetary policy were enough to have a discernible effect on financial conditions at the end of June: yields for long term bonds rose, and the euro appreciated. That said, the common currency is still relatively cheap, and borrowing costs for non-financial firms and private households are still low. • Overall, we raise our GDP forecast for 2017 from 1.7% (spring report) to 2.1% and for 2018 to 1.8% (spring: 1.7%). We expect HICP inflation to remain well below the ECB target both in 2017 and 2018. • A major risk for the continuation of the current upswing in 2018 comes from the normalization of monetary policy: it is not clear by how much long term interests will rise and whether higher borrowing costs will jeopardize the confidence of financial markets in the solvency of some public debtors in the euro area.

Global economic activity appears to be expanding rapidly during spring 2017. Confidence among managers is either strong or has improved in all major regions, and world trade and industrial production have, after two years of weakness, picked up markedly during last winter. For 2 ½ years, the euro area economy has now been constantly expanding at an annual rate of about 1.6%, slightly above potential. Employment has also been expanding steadily. Production and employment have been recently rising almost everywhere, including countries such as France and Italy where unemployment rates still do not appear to be on a downward trend. Official investment data for 2015 and 2016 appear to be distorted: big multinational firms relocated parts of their assets (intellectual property products in particular) or their registered business offices from countries outside the euro area to Ireland. As a consequence, reported gross fixed capital formation in Ireland expanded by 33% in 2015 and by 45% in 2016. Without this effect, investment growth in the euro area is about one percentage point lower in 2015 and 2016. Headline inflation hit 2% in February, but this was only the effect of higher world oil prices. The core rate is stubbornly at slightly below 1%, and wages rise annually by scarcely 1.5%. The revival of the economy will have to continue for considerably more time until inflation will come close to the ECB target zone. As monetary conditions continue to support growth, financial policies will be slightly expansive, and a certain external stimulus should come from the apparent recovery of world trade. Overall, we forecast euro area GDP to expand by 1.7% in both 2017 and 2018. However, policy uncertainty is substantial and could have a negative effect. In particular, elections in member states might give power to movements that aim at disintegrating Europe. Such a turn could rapidly undermine confidence, in particular in the financial strength of highly indebted member states.

The global financial crisis of 2007-08 and its adverse effects on economic activity have put financial stability back on the agenda of both researchers and policymakers. The regulatory debate has since then revolved around the question which reforms are needed to effectively reduce the likelihood and costs of future systemic financial crises. By now, the debate has led to an update of regulatory frameworks on the national, European, and global level. This thesis contributes to the empirical research on the risks to financial stability and to the debate on the regulation of international financial markets. It builds on some of the key insights from the recent global financial crisis and the respective policy responses. Chapter 1 of the thesis analyzes the reasons behind the strong co-movements of credit risk in sovereign bond markets during the financial crisis and the subsequent euro area debt crisis. In addition, it investigates to what extent high co-movements might be the outcome of contagion and through which channels contagion occurs. Chapter 2 investigates how uncertainty in banking affects banks’ loan supply, and it analyzes if the lending behavior is heterogeneous across different types of banks. Turning to the analysis of actual policies, Chapter 3 studies the effect of liquidity provided by the Eurosystem on macroeconomic adjustment in European crisis countries. Finally, Chapter 4 of the thesis assesses the effectiveness of a macroprudential policy instrument, caps on banks’ leverage, in stabilizing credit growth during financial downturns.

This paper investigates the macroeconomic risks associated with undesirably low inflation using a medium-sized New Keynesian model. We consider different causes of persistently low inflation, including a downward shift in long-run inflation expectations, a fall in nominal wage growth, and a favorable supply-side shock. We show that the macroeconomic effects of persistently low inflation depend crucially on its underlying cause, as well as on the extent to which monetary policy is constrained by the zero lower bound. Finally, we discuss policy options to mitigate these effects.

During the first half of 2016, investment activity of private firms was weak in most advanced economies and labour producitivity was even decreasing, as was world trade in goods. Consumption of private households, however, kept the world economy afloat. Within this global context, the modest recovery of the euro area economy continues, with important tailwinds from labour markets. Employment ist expanding everywhre, even in those countries, such as France and Italy, where unemployment rates have still not come down significantly. Since monetary and fisical policies will not become more expansive in 2017, the stimulus from cheap oil is fading, and exports to the UK will be dragged down by the fallout of the Brexit votem there is reason to expect the euro area recovery to lose some momentum. GDP will, according to our forecast, increase by 1,6% in this year and by 1,5% in 2017, about as much as potential output in the euro area. Our inflation forecast for 2016 is 0,2%. For 2017, we expect inflation to increase up to 1,2%, as during next year the favourable effects of decreasing energy prices will fade off.