Alex Salmond repeatedly pushed Alistair Darling to give a simple answer as he quizzed him more than 20 times if he agreed with David Cameron that Scotland can be a successful independent country.
The SNP leader told the former chancellor all he needed to give was a "yes" or "no" answer to his question as Darling repeatedly attempted to expand on his initial response.
But Darling refused to give him the word he wanted.
Watch the exchange here:
The first debate between Alistair Darling and Alex Salmond had barely finished when their respective teams went into battle.
Campaign rivals Alex Salmond and Alistair Darling both traded blows in a surprisingly feisty televised debate on Scottish independence.
Alistair Darling is getting 'feisty' during the STV Debate.