Trump to Drop Climate Change as National Security Threat Trump is reversing Obama's strategy to combat climate change by revising his national security plan. The plan will be announced on Monday and focus on U.S. defense against other countries, according to reports from AP. The Obama-era plan called climate change… "[an] urgent and growing threat to our national security.” But now Trump's report reduces it's threat level to focus on "an importance of environmental stewardship." Trump has also promised to remove the U.S. from the Paris Climate Agreement, which aims to unite international forces to reduce greenhouse gas emissions.