The development agency Progressio says it is "delighted" with UK Climate and Energy Secretary Chris Huhne's announcement that the government will agree a legally binding fourth carbon budget.
This answers the key demand made of the government by a number of environment campaigners, the Catholic agency comments.
Activists recently petitioned Number 10 Downing Street to highlight the impact of climate change on people in developing countries, such as Peruvian alpaca farmer Humberto Lizano.
Tim Aldred, Head of Policy at Progressio declared: "Poor communities around the world are already suffering the effects of climate change largely caused by emissions from industrialised countries, on their water supplies, agriculture, and from increasingly severe natural disasters. Their message is that richer countries like the UK must now take a lead in tackling climate change."
Humberto Lizano, who has experienced the devastating impacts of climate change first hand, told Progressio supporters: "Climate change is bringing us freezing days and a high incidence of sun. And these big temperature changes do not allow agriculture to flourish. The people who suffer most are those with a precarious personal economy, like the alpaca farmers or the cereal or potato farmers."
"Humberto and others like him will be encouraged that the UK is continuing to act to cut emissions. The agreement that has now been reached - despite reports of disagreements within government - may be a step in the right direction, but there is still further to go", added Aldred.
He continued: "There are too many get out clauses in this statement which could allow this important commitment to be watered down in the future.
"Doing a deal for today is one thing. Making it stick for the long term will require dogged determination", concluded the Progressio spokesperson.
Progressio was formerly known as the Catholic Institute for International Relations. It is a UK-based charity working internationally to help people gain power over their lives and to overcome barriers that keep them poor. www.progressio.org.uk