Five carmakers are involved in a case at the High Court in London over claims that they cheated on emissions tests. A decade ago, the “dieselgate” scandal broke, eventually forcing Volkswagen to pay billions of euros in fines and settlements. These carmakers (Mercedes, Ford, Peugeot/Citroën, Renault and Nissan) have all faced accusations that selling cars was more important to them than their environmental responsibilities. They all deny the allegations.

Back in 2015, all United Nations member states adopted 17 sustainable development goals (SDGs) as a global blueprint to end poverty and inequality, protect the planet and promote peace by 2030. Central to this agenda is the pledge to “leave no one behind”, affirming that progress in any area matters only if it reaches the world’s most vulnerable communities.

The allegations against the carmakers sit within this wider pattern. When firms treat a crisis – in this case environmental regulations – as justification for bending the rules, sustainability stops being a real commitment and becomes a fair-weather promise.

The same logic can appear in geopolitics, but with far more devastating consequences. At the extreme end, conflict shows how quickly the SDG blueprint can unravel.

In Gaza, for example, more than two-and-a-half years of war have pushed the goals into reverse. Poverty and hunger have deepened (SDGs 1 and 2); hospitals have been bombed, damaged or overwhelmed, making even basic care difficult to provide (SDG 3); children have been kept out of school (SDG 4); clean water and sanitation systems have deteriorated (SDG 6);........

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