ECONOMIST Trevor Hambayi says in order for the exchange rate to be stabilised, exchange control restrictions should be implemented. In an interview, Sunday, Hambayi said a lot of multinationals were externalising hard currency, which was putting pressure on the exchange rate. “In terms of stabilising the exchange rate, the one factor that does this is a positive trade balance. When you have a positive trade balance, which is by virtue of us being able to export more than we are importing, we are generating a higher revenue. This is the best scenario that creates the stability of the exchange rate because then you start building your hard currency reserves. That is the long-term strategy. In the short term right now,...