Direct conflict between Russia and NATO was once unthinkable, but preparations and defense spending have been stepped up in nervous Baltic states.

President Vladimir Putin's investment envoy outlined a plan for U.S.-Russia tunnel connecting Alaska and Siberia through Bering Strait within eight years at $8 billion cost.

Russia, China, Iran and North Korea are using artificial intelligence to improve their cyberattacks on U.S. companies, governments and individuals, according to new research from Microsoft.

Austria said on Saturday that it would agree to the European Union's latest sanctions package against Russia, in an about-face of its earlier stance and removing a key hurdle ahead of a vote early next week.