Global leaders put in extra effort into negotiations to reach an agreement on reducing emissions and assisting developing countries affected by climate change before the Friday deadline. The United States helped break the stalemate by supporting a $100 billion climate fund for poorer nations. A group of influential leaders engaged in productive discussions overnight to resolve issues in the climate talks, according to Danish Prime Minister Lars Lokke Rasmussen. Despite concerns about potential failure, leaders began a final push after a gala dinner hosted by Denmark's Queen Margrethe for 120 world leaders in Copenhagen. French President Nicolas Sarkozy stated that time is running out and there is no time for pretending during the talks. He warned that a failure in Copenhagen would have disastrous consequences for everyone. Police detained 28 people, including three who managed to enter the palace during a Greenpeace protest. Activists arrived before U.S. Secretary of State Hillary Clinton and carried signs urging leaders to take action. U.S. President Barack Obama is expected to face pressure to commit to further emissions cuts during his arrival on Friday. European Commission President Jose Manuel Barroso expressed his high expectations for a significant announcement to be made during the upcoming climate summit. He emphasized that President Obama's visit is not merely to repeat what is already outlined in the draft legislation, especially with regards to the climate bill awaiting approval in the U.S. Senate. Barroso mentioned that Obama is scheduled to meet with Chinese Premier Wen Jiabao during the summit, indicating the potential for progress in negotiations between the two countries. Despite advancements in discussions, officials were uncertain if a final agreement would be reached once Obama joined the talks. One U.S. official highlighted improvements in monitoring, reporting, and verification requirements for emissions reduction efforts by China and other major developing nations. China has objected to these demands. The United States has boosted morale by committing to support a $100 billion annual fund for developing countries starting in 2020. This amount would surpass all current aid given to developing countries, according to a U.N. official, and align with the requests made by African nations. U.N. Secretary-General Ban Ki-moon expressed optimism about the U.S. commitment, calling it "very encouraging." An American official indicated that President Obama was not expected to provide further details about U.S. funding promises. An agreement on financing is just one piece of the puzzle, which also involves various other measures like preserving rainforests, strengthening carbon markets, and tightening global carbon emission limits. German Chancellor Angela Merkel stated that if everyone contributes a little more, the goals can be achieved. She mentioned that the European Union is prepared to do more but will not take action independently. However, any agreement will require unanimous approval. Certain small island nations and African countries, which are the most at risk from climate change, have indicated that they will not accept a weak agreement. "We are discussing the survival of our nation," said Prime Minister Apisai Ielemia of Tuvalu, a Pacific island state, regarding the ongoing talks in Bali, Indonesia that started two years ago. The negotiations include potential targets like cutting global greenhouse gas emissions in half by 2050 or requiring developed countries to reduce their emissions by 25-40% by 2020. Kim Carstensen, leader of WWF's global climate initiative, noted progress in reaching a compromise, partly due to the U.S. offering financial assistance. Earlier, the possibility of a strong U.N. climate agreement seemed unlikely, with China and the U.S. being blamed for the stalemate on carbon reduction. Ministers and leaders emphasized the need for renewed urgency, stressing the critical importance of Copenhagen. China's climate change ambassador Yu Qingtai stated, "Copenhagen cannot afford to fail."