1. For Vietnam, has the pattern of comparative advantage changed significantly during the last 25 years? If yes, described changes. Provide an explanation as to why comparative advantage has changed or has not changed over time. References to the relevant literature are necessary.

2. For Russia, has the pattern of comparative advantage changed significantly during the last 25 years? If yes, described changes. Provide an explanation as to why comparative advantage has changed or has not changed over time. References to the relevant literature are necessary.