26%--or nothing?

The right-wing coalition ruling Australia says Australia's emissions will fall 26% over the next decade.  Only, these are the government's own projections:

Source: Simon Holmes à Court

So how can they claim that emissions will fall?  Well, they include "overachievement" from the previous Kyoto agreement in the data.  In fact, of course, it's obvious that emissions are barely declining.  And, after all, the climate doesn't give a fig about accounting, just the reality of greenhouse gas emissions.