OPINION: A paltry 12 months ago most government's in the global North were focused on decarbonisation and how to deliver on promises made at the COP26 UN climate talks in Glasgow.

National security has since muscled energy transition off top spot for policy concerns in most capitals.

Last month's COP27 climate summit in Egypt reflected this, leading to an outcome which climate campaigners criticised as time-wasting.

The destructive war in Ukraine that Vladimir Putin launched in February was behind this sea change.