“…The country would be beset with debt overhang and be 'bubble financing' its debt repayments using the Ponzi schemes, if the present value of foreign debt outstanding at the end of time t exceeds the sum of the discounted values of all future net trade surpluses. The empirical evidence across countries remains mixed in that some studies support the sustainability of CADs and validity of IBC (Trehan and Walsh, 1991;Husted, 1992;Bergin and Sheffrin, 2000;Arize, 2002;Matsubayashi, 2005), (ii) some suggest the unsustainability of CADs and violation of IBC (Otto, 1992;Wickens and Uctum, 1993;Wu et al, 1996) and (iii) yet some others yield mixed results (Sawada, 1994;Raybaudi et al, 2004;Holmes, 2006;Konya, 2009;Holmes et al, 2011).…”