US President Joe Biden has criticised the leaders of China and Russia for not turning up to the COP26 climate summit.
In a speech on Tuesday night, Mr Biden said climate was "a gigantic issue" and China "walked away" - adding it was the "same thing with Russia and Putin".
Neither Russian President Vladimir Putin nor Chinese leader Xi Jinping are at the summit.
Both countries however have sent delegations to the talks, which are due to run for two weeks until 14 November.
China is the world's largest emitter of carbon dioxide, followed by the US. Russia is the fifth largest after the EU and India.
