Russia has staged a nationwide nuclear war test amid growing fears of World War III, and a day after Trump warned Putin that the US has more nuclear weapons than any other country. Sirens blared with ...

Over the past month, eyes across Europe have been trained on the sky. For some, the biggest risk is under-reacting. According to these accounts, Russia’s violations of its neighbors’ airspace are ...

China, for First Time, Vows to Reduce Greenhouse Gas Emissions President Xi Jinping told a U.N. climate conference that his country would seek to reduce emissions by at least 7 to 10 percent by 2035.