The U.S. warned Russia Wednesday it would be a “grave mistake” to intervene militarily in Ukraine, after President Vladimir Putin put 150,000 combat troops on high alert for war games near the turmoil-ridden country. “For a country that has spoken out so frequently … against foreign intervention in Libya, in Syria and elsewhere, it …

Russian President Vladimir Putin has ordered a snap military drill in Russia’s western region bordering Ukraine as the war of words between the two countries grows increasingly acrimonious. Russia’s Defence Minister Sergei Shoigu said the armed forces of the Western and Central Commands had been put on “combat alert” for …

Fistfights broke out between pro- and anti-Russian demonstrators in Ukraine’s strategic Crimea region on Wednesday as Russian President Vladimir Putin reportedly ordered tests of the combat readiness of troops just across the border.