U.S. is ‘very, very optimistic’ on the U.N. climate agreement

The U.K. and U.A.E. have signed a landmark climate agreement in the final days of a historic U.NS.F.-led process.U.S., European Union and China signed the agreement on Sunday, and it is expected to be ratified at the United Nations in New York on Tuesday.President Donald Trump and other leaders have repeatedly dismissed the pact as