If chutzpah was combustible, Prime Minister Scott Morrison could single-handedly solve the global energy crisis.

After ostentatiously not attending the UN climate action summit, our "man of titanium" capped off his American tour by insisting that China, as a rising power, must do more to reduce emissions.

The effrontery was gobsmacking, not merely because the statement coincided with analysts and former diplomats accusing Scott Morrison of leading a "denialist government" -- but also because, in 2018, Australia sold China about $15 billion worth of coal, a substance that, as you might have heard, bears some link to carbon pollution.