Slovakia has been given the green light to adopt the euro on January 1, 2009. It will be the first country of the defunct Soviet sphere to join the euro zone. The European Commission said the nation of 5.4 million people is ready to switch to the currency now shared by 15 states, crowning years of ambitious economic reforms in Slovakia. It is thought likely that the currency union will further enhance its stature as an invesors’ favourite. The European Union’s finance ministers are expected to confirm the country’s euro go-ahead in July.