Britain the launch of the "Cop 26" climate summit, and Johnson describes it as a "last chance"

British Prime Minister Boris Johnson has described the COP26 climate summit as the "last chance" for a plan to cut carbon emissions.

The COP26 climate summit kicked off Monday in the Scottish city of Glasgow, north of the United Kingdom, with the participation of leaders from 120 countries, in what British Prime Minister Boris Johnson described as the "last chance" to develop a plan to cut carbon emissions.

In his opening speech, Johnson called for the summit to be "a watershed moment in the transition to a serious tackling of climate change, including coal, cars, money and trees."

"It will not be possible to contain the world's anger and impatience if the summit fails, and we (world leaders) will face harsh judgment from future generations unless we act resolutely," he said.

"We can act now to save our planet, but if Glasgow fails, everything will fail," he added.

The climate summit comes a day after the G20 summit, which was held in Rome on Saturday and Sunday, concluded and failed to set a timetable for reaching a net zero carbon target by 2050.

The G-20 summit witnessed sharp division and mutual accusations, especially between the United States on the one hand, and Russia and China on the other, and it failed to agree on allocating $100 billion to fund a program to reduce global warming.

US President Joe Biden, European Union leaders and Australian Prime Minister Scott Morrison will participate in the COP26 summit, while Chinese President Xi Jinping and Russian President Vladimir Putin will be absent.

The countries participating in the summit contribute about 80 percent of carbon emissions.