Most of the world’s nations have missed a UN deadline to set new climate targets as efforts to curb global warming come under pressure following U.S. President Donald Trump's election.

Nearly 200 nations faced a Monday deadline to file what the United Nations’ climate chief calls “among the most important policy documents governments will produce this century."

Many of the world's biggest polluter nations have missed a U.N. deadline to set new climate targets as efforts to curb global warming come under pressure following U.S. President Donald Trump's election.