Australian: THE critical issue of climate change has been caught up in the leadership politics of the Liberal Party, says Prime Minister Kevin Rudd. Mr Rudd also slammed comments from Federal Opposition Leader Brendan Nelson, who today said it would be unlikely that a carbon emissions trading scheme would be up and running before 2012. “On something as critical as climate change which affects our economy, our river systems and our jobs and our kids we have a clean-cut course of …