SHARM EL SHEIKH, Egypt — Diplomats from nearly 200 countries concluded two weeks of climate talks on Sunday by agreeing to establish a fund that would help poor, vulnerable countries cope with climate disasters made worse by the greenhouse gases from wealthy nations.The deal calls for a committee with representatives from 24 countries to work over the next year to figure out exactly what form the fund should take, which countries and financial institutions should contribute, and where the money should go.“The announcement offers hope to vulnerable communities all over the world who are fighting for their survival from climate stress,” said Sherry Rehman, the climate minister of Pakistan, which suffered catastrophic flooding this summer that left one-third of the country underwater and caused $30 billion in damages.“We cannot afford to have another climate summit like this one.” The new agreement emphasizes that countries should strive to limit global warming to 1.5 degrees Celsius, or 2.7 degrees Fahrenheit, above preindustrial levels.“This is the make-or-break decade, but what we have in front of us is not enough of a step forward for people and planet.” The two-week summit, which had been scheduled to end on Friday, stretched until dawn on Sunday as exhausted negotiators from nearly 200 nations clashed over fine print."