The recent financial crises, especially the debt crisis in Asia, have led to questions su ch as: what are their causes, what is an excessive debt and how vulnerable is an economy to external shocks? We develop an economic model of international finance and debt based upon two sources of...

We use stochastic optimal control-dynamic programming (DP) to derive the optimal foreign debt/net worth, consumption/net worth, current account/net worth, and endogenous growth rate in an open economy. Unlike the literature that uses an Intertemporal Budget Constraint (IBC) or the Maximum...

During the past three decades, Japan s current account experienced five large swings. The yen appreciated considerably in periods when the current account boomed, and it depreciated whenever Japan s external performance weakened. However, there has always been a certain lag in the adjustment of...

In this paper we document three credit market imperfections prevalent in middle income countries that can help to explain boom-bust cycles, as well as other macroeconomic patterns observed at higher frequencies across these countries. These imperfections are: the existence of financing...

What is an optimal or a sustainable external debt - for a country, region or sector? How should one monitor and evaluate debt to preclude a crisis? We use stochastic optimal control/dynamic programming to derive an optimal debt. The deviation of the actual from the optimal will serve as a...

Due to buoyant capital inflows East Asian central banks with exchange rate targets accumulate foreign reserves and thereby increase surplus liquidity. East Asian central banks with more flexible exchange rate regimes also face surplus liquidity that mainly emanates from past accumulation of...

I propose a model of the reserve currency paradigm that centers on liquidity demand for safe assets. In global recessions, the demand for U.S. safe assets increases and raises their convenience yields, giving rise to stronger dollar and countercyclical seigniorage revenues. The seigniorage...

The Target liabilities of the GIPS countries (Greece, Ireland, Portugal and Spain) amounted to314 billion euros in March 2011. They measure the additional central bank money that their corresponding National Central Banks (NCBs) have loaned in excess of the money needed to cover their domestic...