"Please give me a link where Krudd said specifically a carbon tax would reduce droughts??"
An ABC radio transmission.
However as I was driving at the time there could be maybe a 10% chance that he said that his carbon tax would have made no difference. Hmmmm. Make that a 5% chance. No. I will stick with the 0% chance that Rudd claimed that the carbon tax would make no difference.
By the tone of your piece I would say that Bennybop also believes that the carbon tax would make a 0% difference to our climate and the current drought. So well done, a tiny step but still progress.