Shane Warne says revitalised Australia can pull off World Cup shock

• Return of Steve Smith and David Warner could be crucial
• Former spinner believes team spirit good in Australia campA week after Australia completed a dramatic series victory in India by winning their last three matches, ending a dismal run of 22 defeats in 26 completed one-day internationals, Shane Warne believes the team are once again striking fear into opponents and can be spurred to World Cup glory by the reintegration of David Warner and Steve Smith.Warner and Smith’s 12-