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

Ukrainian President Volodymyr Zelenskyy visited to ask President Trump for more military aid as the war with Russia persists.

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.

Ukraine is asking the U.S. to provide Ukraine with Tomahawk missiles, which would give Ukraine the ability to strike targets far inside Russia for the first time. Here are the facts on what these missiles are about.

On Oct. 18, 1867, the United States completed its purchase of Alaska for $7.2 million, taking possession of the territory from Russia.

Britain targeted Russia's two largest oil companies, Lukoil and Rosneft, and 51 shadow fleet tankers on Wednesday in what it described as a new bid to tighten energy sanctions and choke off Kremlin revenues.

Hi, this is Tania Myronyshena reporting from Kyiv on day 1,332 of Russia's full-scale invasion of Ukraine. Today's top story: Russia shot down its own Su-30SM fighter jet over Crimea while its air defense was trying to intercept Ukrainian drones flying to the occupied peninsula and deep inside Russia overnight,