Breaking climate vows would be ‘monstrous self-harm’, warns Cop26 president

Alok Sharma will return to Glasgow to say world leaders must show that ‘though the world has changed, our resolve has not’. Photograph: Jane Barlow/PA

Failure to act on the promises made at the Glasgow Cop26 climate summit last year would be “an act of monstrous self-harm”, the UK’s president of the conference will warn today in Glasgow.

Alok Sharma, the cabinet minister who led the UK-hosted summit that ended with agreement to limit global heating to 1.5C, will say that Russia’s invasion of Ukraine, and rising energy and food prices, have changed the global outlook drastically in the six months since.