What Plaid Cymru can learn from SNP

With less than a week until Scotland goes to the polls in the independence referendum, BBC Wales looks at the success of its nationalist party - the SNP.

First Minister Alex Salmond has made it such a success, next Thursday's vote is too close to call.

But why hasn't Wales' nationalist party, Plaid Cymru, achieved the same level of success?

Political editor Nick Servini examines the issues - including the role played by Labour.