[9] The report stated that "global warming will drive increasingly severe humanitarian crises, forced migration, political instability and conflict in the Asia-Pacific and world.

"[12] David Spratt, Research Director for Breakthrough said there was a disconnect between evidence presented to the inquiry, that climate change was a “current and existential national security risk”, and the recommendations that emerged from it.

It predicts that by 2050, sea levels will have risen by 0.5 metres, the Amazon ecosystem will collapse, the Arctic will be ice-free in summer, global crop yields drop by a fifth and more than half of the world’s population faces 20 days a year of lethal heat.

[23] The report says "irreversible damage" is happening to global climate systems "resulting in a world of chaos where political panic is the norm and we are on a path facing the end of civilisation".

[24] Adam Sobel, professor of applied physics and mathematics at Columbia University in New York who studies atmospheric and climate dynamics, says the scenarios described in the report "don't seem that far-fetched to me.

They describe the potential security and infrastructure threats from rapid climate change including political instability, economic collapse, mass migration and sea-level rise.