African nations called off a day-long boycott at U.N. climate talks today after winning promises that rich nations would make more efforts to deepen 2020 cuts in greenhouse gas emissions, according to Reuters. But the group threatened to repeat the boycott if there was no progress in discussions on Wednesday. "We were able to arrive at a solution," John Ashe, an official of Antigua and Barbuda who chairs negotiations among parties to the U.N."s existing Kyoto Protocol, told delegates at the 175-nation meeting in Barcelona. "Failure ... in tomorrow"s discussions will give us no option but a suspension," of the talks again, said Pa Ousman Jarju from the delegation of Gambia, one of leading countries which organised the Africa boycott. The African countries boycotted some of the talks in protest at what they called inadequate promises by developed nations for cutting greenhouse gas emissions by 2020 as part of a U.N. deal due to be agreed in Copenhagen next month. African delegates said their nations are most exposed to droughts, floods, wildfires, desertification, disease and rising sea levels projected by U.N. studies as a result of global warming caused mainly by burning fossil fuels. Under Tuesday"s compromise, six of 10 remaining Kyoto sessions at the Nov. 2-6 negotiations in Barcelona would focus on cuts in greenhouse gas emissions by industrialised nations -- one of biggest stumbling blocks to a Copenhagen deal. African delegates said the change of schedule had to be matched by a real willingness to cut emissions. African nations say developed states should cut emissions by at least 40 percent below 1990 levels by 2020 -- far deeper than cuts on offer so far ranging from 11 to 15 percent. Barcelona is the final U.N. session before Copenhagen. Earlier, Kemal Djemouai, chair of the African group, explained the protest, saying: "People in Africa are suffering now, people are dying now, when the developed countries are not willing to express...ambitious reductions."