As a EU member state, Sweden could face opposition to its plans from the ECB (European Central Bank). Estonia has similar ambitions but was dissuaded by ECB President Mario Draghi as recently reported by cointelegraph. In a nutshell, he reminded Estonia that the Euro is the only currency allowed within the Euro Zone.
It will be very interesting to see how this all plays out in the coming months and years.
Yes very interesting indeed! Sweden's relationship with the eurozone is interesting too. Basically they're obliged to join once they meet the entry criteria but their government is frigging it so that they never have to join!