Trump to unveil 'America First' national security strategy

WASHINGTON— Prioritizing national sovereignty over alliances, President Donald Trump is poised to outline a new national security strategy that envisions nations in a perpetual state of competition, reverses Obama-era warnings on climate change, and de-emphasizes multinational agreements that have dominated the United States' foreign policy since the Cold War.The Republican president, who ran on a platform of "America First," will detail his plan Monday, one that if fully implemented could