The dissertation investigates if Central and Eastern European countries with unregulated capital flows are more vulnerable to currency crises. In order to answer this question properly the paper considers two lines of analysis: single-country and multi-country. Single -country studies look into three cases: Russia, Poland and Latvia. The multi-country analysis is the simple adaptation of Glick, Guo and Hutchison's probit panel model (2004). The results suggest that countries with liberalized capital accounts experience a lower likelihood of currency crises. Moreover, the information from case studies pointed that the speed and sequence of the CAL process needs to be adequate for the country development.This paper, co-winner of the best student paper award, was presented at the 18th International Conference of the International Trade and Finance Association, meeting at Universidade Nova de Lisboa, May 22, 2008.