Kazakhstan is not planning to give up Boeing 787 Dreamliner aircrafts despite of suspension of their use in the U.S. and Japan after several incidents.
Ministry has to become one of the main player coordinating, identifying and attracting the interested parties into generation of suggestions for implementation the EXPO-2017 ideas: Nazarbayev.
It is hard to give the exact number of participating countries now, but the preliminary number is over 100 countries. I think this is a good number: Vicente Loscertales.