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” — their plans on how they will cut emissions of heat-trapping gases. Most won't make the deadline. The U.N. says that's OK as long as they are working on them.

The Trump administration is going to gut climate protections. Climate activists say nothing is off the table in response.

Nearly all nations missed a UN deadline Monday to submit new targets for slashing carbon emissions, including major economies under pressure to show leadership following the US retreat on climate change.